Division is not associative so the question is ambiguous. Assuming the binary operations are evaluated left to right, the answer is
(9/29)/40 = 0.0077586 (approx).
0.725
29 / 40 = 0.725
9.725
-1.725
In math 40 over 66 written as a decimal is 0.60606060606060.
-1.725
51/40 written as a decimal is 1.275
31.475
59.275
0.7 or 70%
25 over 40 as a decimal is 0.625.
Five over 40 as a decimal is 0.125.