Added breakdown of code converting pence string to pound format.

Author: ahmadehsas

Sprint-1/3-mandatory-interpret/3-to-pounds.js

@@ -24,4 +24,13 @@ console.log(`£${pounds}.${pence}`);
 // Try and describe the purpose / rationale behind each step
 
 // To begin, we can start with
-// 1. const penceString = "399p": initialises a string variable with the value "399p"
+// 1. const penceString = "399p": initializes a string variable with the value "399p"
+
+
+// 2: "const penceStringWithoutTrailingP = penceString.substring(0,penceString.length - 1)"__ Removes the trailing "p" character.
+// substring(0,penceString.length - 1) this code gets all characters except the last one. so "399p" becomes just"399". 
+// 3: const paddedPenceNumberString = penceStringWithoutTrailingP.padStart(3, "0") Ensures the pence string that has at least 3 digits, by padding it in left with "0" if needed for example: 399 stays 399 or 7 would become 007. 
+// 4: const pounds = paddedPenceNumberString.substring(0,paddedPenceNumberString.length - 2) Extracts the pound portion (except the last two one) __ "399"-"3"(pounds) 
+// 5: const pence = paddedPenceNumberString.substring(paddedPenceNumberString.length - 2).padEnd(2, "0") Gets the last two digits as the pence part. for example: "399"__"99"(pence)
+// padEnd(2, "0") ensures at least two digits for pence.__eg: "3"_"30".
+// 6: console.log(`£${pounds}.${pence}`) logs the full formatted price in pounds and pence.__eg:for "399P" pounds"3" pence"99" and the result is __ "3.99"