$21 - $3 = $18
$18 - $4.75 = $13.25
$13.25 - $4.75 = $8.50
$8.50 - $4.75 = $3.75
Which means that she played 3 games, and has $3.75 left over.
But if you were to divide 4.75 from 21 it would equal 4 games and $2 left over.
21 - 4.75 = 16. 25
16.25 - 4.75 = 11.50
11.50 - 4.75 = 6.75
6.75 - 4.75 = 2
4 games and $2 dollars left over.
Answer - 3