Verified Answer :

It is 450 divided by 9 because you first see the first two number so you can a number close to 47 so pick any multiplication equation and 9 x 5 =45.

Compatible numbers are basically converting a number to make it easier to find the answer by estimating. 
Since 9 x 5 = 45, and it is closest to 474, you can do that.
So, to estimate, change 474 to 450 and divide it by 9, which is 50.

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