fraction(A, B) \times C = {?}
C
is the same as \dfrac{C}{1}
\dfrac{A}{B} \times \dfrac{C}{1} = {?}
When multiplying fractions, we multiply the numerators and the denominators:
= \dfrac{A \times C}{B \times 1}
= \dfrac{A * C}{B}
Simplify:
= fractionReduce(A * C, B)