fixing the cardNumber problem.

Author: Jacknguyen4438

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

@@ -1,5 +1,5 @@
-const cardNumber = 4533787178994213;
-const last4Digits = Number(cardNumber.toString().slice(-4));
+const cardNumber = 4533787178990001;
+const last4Digits = cardNumber.toString().slice(-4);
 console.log(last4Digits);
 console.log(typeof last4Digits);