Work with Long Integer Arithmetic in C

# Introduction

In this lab, you will learn how to work with large integer arithmetic in C using the `long long` data type. The lab covers the following steps:

Declare `long long` variables to handle large integer values, perform basic arithmetic operations such as addition, subtraction, multiplication, and division on these large integers, and print and validate the results. By the end of this lab, you will be able to effectively work with large integer data in your C programs.