diff --git a/src/expression_parser.rs b/src/expression_parser.rs
index b10d8c9..4992294 100644
--- a/src/expression_parser.rs
+++ b/src/expression_parser.rs
@@ -221,7 +221,8 @@ impl Expression {
                         }
                         stop_at = index;
                     }
-                    dbg!(&stop_at);
+                    #[cfg(debug_assertions)]
+                    {dbg!(&stop_at);}
                     // needed for none task: '1 + (1 + 1)'
                     let fixup = if stop_at == 0 { 0 } else { 1 };
                     task_text_full = possible_task.clone()[..stop_at+ fixup].chars().rev().collect::<String>();
@@ -289,18 +290,24 @@ impl Expression {
                     std::process::exit(2);
                 }
             };
+            #[cfg(debug_assertions)]{
             dbg!(&child.full_text);
             dbg!(&child_full_text);
+            }
             normalized_text = normalized_text.replace(child.full_text.as_str(), child_full_text.as_str());
         }
+        #[cfg(debug_assertions)]{
         dbg!(&normalized_text);
+        }
         // TODO Shunting yards algorithm, as we now have only calculatable values left.
         // Implement this as public module in shunting_yard.rs
         // self.result = MYRESULT
         let rpn = shunting_yard::form_reverse_polish_notation(&normalized_text);
         match rpn {
             Ok(valid_rpn) => {
+                #[cfg(debug_assertions)]{
                 dbg!(&valid_rpn);
+                }
                 return shunting_yard::calc_reverse_polish_notation(valid_rpn);
             },
             Err(err) => {
diff --git a/src/expression_parser/shunting_yard.rs b/src/expression_parser/shunting_yard.rs
index a7b7709..8fc160b 100644
--- a/src/expression_parser/shunting_yard.rs
+++ b/src/expression_parser/shunting_yard.rs
@@ -78,19 +78,19 @@ const SUBTRACTION: Operator = Operator {
 
 const MULTIPLICATION: Operator = Operator {
     character: '*',
-    precedence: 2,
+    precedence: 3,
     associativity: Associativity::Left
 };
 
 const DIVISION: Operator = Operator {
     character: '/',
-    precedence: 2,
+    precedence: 3,
     associativity: Associativity::Left
 };
 
 const EXPONENTIATION: Operator = Operator {
     character: '^',
-    precedence: 2,
+    precedence: 4,
     associativity: Associativity::Right
 };
 
@@ -108,6 +108,7 @@ pub fn form_reverse_polish_notation(regular_math: &str) -> Result<Vec<String>, S
     while !(input_queue.is_empty()) {
         // read a token
         let token: char = input_queue.pop().unwrap();
+        #[cfg(debug_assertions)]
         dbg!(&token);
 
         // if the token is:
@@ -145,6 +146,7 @@ pub fn form_reverse_polish_notation(regular_math: &str) -> Result<Vec<String>, S
 
             // while there is an operator o2 at the top of the stack 
             if !operator_stack.is_empty() {
+                #[cfg(debug_assertions)]
                 dbg!(&operator_stack);
                 let o2 = match Operator::get_operator(*(operator_stack.clone().last().clone().unwrap())) {
                     Some(valid_op) => valid_op,
@@ -183,6 +185,7 @@ pub fn form_reverse_polish_notation(regular_math: &str) -> Result<Vec<String>, S
     if currently_processing_numeric_group {
         output_queue.push(current_numeric_group);
     }
+    #[cfg(debug_assertions)]
     dbg!(&output_queue);
 
     // afterwards, process any operators still on the operator_stack
@@ -190,6 +193,7 @@ pub fn form_reverse_polish_notation(regular_math: &str) -> Result<Vec<String>, S
         output_queue.push(vec![operator_stack.pop().unwrap()]);
     }
 
+    #[cfg(debug_assertions)]
     dbg!(&output_queue);
     let mut rpn: Vec<String> = Vec::new();
     for group in output_queue {
@@ -231,6 +235,7 @@ pub fn calc_reverse_polish_notation(rpn: Vec<String>) -> Result<f64, String> {
     let mut stack: Vec<f64> = Vec::new();
 
     for group in rpn {
+        #[cfg(debug_assertions)]
         dbg!(&group);
         // find out what the group is, an operator, a number, or a variable.
         // TODO add variables
@@ -243,10 +248,12 @@ pub fn calc_reverse_polish_notation(rpn: Vec<String>) -> Result<f64, String> {
                     std::process::exit(2);
                 },
             }
+            #[cfg(debug_assertions)]
             dbg!(&stack);
         }
         else {
             let op: Operator = Operator::get_operator(group.chars().last().unwrap()).unwrap();
+            #[cfg(debug_assertions)]
             dbg!(&op);
             let right = stack.pop().unwrap();
             let left = stack.pop().unwrap();
@@ -282,6 +289,7 @@ pub fn calc_reverse_polish_notation(rpn: Vec<String>) -> Result<f64, String> {
         return Err("result stack empty".to_string());
     }
     if stack.len() > 1 {
+        #[cfg(debug_assertions)]
         dbg!(stack);
         return Err("result stack has too many results.".to_string());
     }