Step 1: Find larges 4 digit number
The largest 4 digit number is = 9999
Step 2: Devide this by 88, 55 is remainder, this means if the number was 55 lesser, it would be completely devisible by 88
After dividing 9999 with 88, we get 55 as remainder
so largest 4 digit number divisible by 88 = 9999-55 = 9944.