You can check by using your estimated number and comparing it with your exact quotient.
81.5
6.877
7.9891
920
What does estimate quotient and then ddivide
4558.5455
9.7222
36.2632
When the correct answer is a quotient.
30.9655
200/4 = 50
2.7954
59.6667
82.6458
3.3714
920 - 390 = 530 Rounding