diff --git a/snippets/toDecimalMark.md b/snippets/toDecimalMark.md
index 79cea1840..deb196bed 100644
--- a/snippets/toDecimalMark.md
+++ b/snippets/toDecimalMark.md
@@ -6,12 +6,8 @@ Use `toString()` to convert the float `num` to a string, then use regex to separ
 
  ```js
 const toDecimalMark = (num) => {
-  let cleanNum = num.toString().split('').filter(n => '0123456789.'.includes(n)).join('') 
-  let wholeNum = cleanNum.split('.')[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",")
-  let decNum = `.${cleanNum.split('.')[1]}`
-  return wholeNum + decNum;
+  let numberParts = num.toString().split('.')
+  return `${numberParts[0].replace(/\B(?=(\d{3})+(?!\d))/g, ',')}.${numberParts[1]}`
 }
 // toDecimalMark(12305030388.9087) //-> '12,305,030,388.9087'
-// toDecimalMark(123.889087e2) //-> '12,388.9087'
-// toDecimalMark('12305abc030388.9087') // -> '12,305,030,388.9087'
 ```