An estimate of 207 divided by '7' is '30' . Because 207 is only three places away from 210.
So 210 divided by '7' = 30
29.5714
207
47.4286
69
103.5
207
207 divided by 2 is 103.5
1.7826
You do not need to estimate it - you can calculate its exact value! 6/7 divided by 2 = 3/7
0.0435
207
18.8182