1x10 equals 10 and 10 plus 2 equals 12 so then you cary the denomanator and then it becomes 12/10
then you multiply 12/10 and 14/8 because you keep change and flip now 12/10 x 14/8 equals 168/80 now you want to simplify and then you get your answer which is 2 and 8/80 ;)
210 divided 6405 = 0.03278688524590164
3
0.419
6
210
7.2414
0.4
3.5 divided by 210 equals approximately 0.01667.
210
14
0.0429
10.5