turn interpret/to-pounds.js into a reuseable block of code

Author: Zadri415

Sprint-2/3-mandatory-implement/3-to-pounds.js

@@ -4,3 +4,13 @@
 // You will need to declare a function called toPounds with an appropriately named parameter.
 
 // You should call this function a number of times to check it works for different inputs
+function formaPenceToPounds(penceString){
+    const penceStringWithoutTrailingP = penceString.substring(0, penceString.length -1);
+    const pounds = paddedPenceNumberString.slice(0, -2);
+    const pence = paddedPenceNumberString.slice(-2);
+     return `£${pounds}.${pence}`;
+}
+
+console.log(formatPenceToPounds("9p"));
+console.log(formatPenceToPounds("39p"));
+console.log(formatPenceToPounds("399"));