Estimate then find each product. Simplify

7 4/5×2 1/3
Is the answer 18 1/5

18 1/5 is the exact answer, so you did not "estimate"

in estimation they expect something like this

7 4/5 is appr 8
2 1/3 is appr 2
and 8x2 = 16

so my estimated answer would have been 16