If 37*14 = 17, 69*33 = 34 and 91*125 = 72 then what should 28*56 = ?

Question

If
a/b = 21/34;
b/c = 121/120;
c/d = 17/77;
e/f = 11/15
and
d/e = 14/17
then what is the value of
(abc/def)*2?

Answer 1

28

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37*14 = (37+14)/3 = 51/3 = 17
69*33 = (69+33)/3 = 102/3 = 34
91*125 = (91+125)/3 = 216/3 = 72
28*56 = (28+56)/3 = 84/3 = 28