Question

9/4*/1/5=
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Answer 1

9   :  1
4      5

9  .  5    =    45
4                  4

Answer 2

$\frac{9}{4} / \frac{1}{5} = \frac{9}{4} * \frac{5}{1} = \frac{9*5}{4*1} = \frac{45}{4}$