Question

A student multiplied 7236 by 75 instead of multiplying by 57. By how much his answer was greater than the actual answer?

Answer 1

Step-1: find the answer of the student and the actual answer:

student's answer: $7236\times 75=5,42,700$

actual answer: $7236\times 57=4,12,452$

step-2: find difference of both-

$\Rightarrow 5,42,700-4,12,452=1,30,248$

Hence, student's answer was $1,30,248$greater than the actual answer.