Sevens sixteenths of the children smirked when they heard the joke. If 210 children smirked, how many children heard the joke?

Take 716 minus by 210 you going to see a much the children joke

7/16 total = 210

Method 1 (the fast method):

(invert 7/16)

16/7 x 210 = 480

Ans: 480

Method 2 (the other method):

7/16 total = 210

1/16 total = 210/7 = 30

16/16 total = 16x30 = 480

Ans: 480