Estimate then record the product

$53 times 4

50 * 4 = ?

Yes it want her to estimate first then find the product. I don't understand

What is her estimate of 50 times 4?

Then, multiply 53 times 4 to find the actual answer.

Why 53

This is the original problem.

$53 times 4

640x3

I do not know I wanted to find the right answer