used .slice to extrat the last 4 digits from the cardNumberString

Author: Tobias-Amaechina

Sprint-1/2-mandatory-errors/3.js

@@ -2,7 +2,7 @@ const cardNumber = 4533787178994213;
 //console.log(typeof cardNumber);
 const cardNumberString = cardNumber.toString();
 
-const last4Digits = cardNumber.slice(-4);
+const last4Digits = cardNumberString.slice(-4);
 console.log(last4Digits); // Output: "4213"
 
 // The last4Digits variable should store the last 4 digits of cardNumber