Find the product :

$28 \times \dfrac{7}{8}$

We have:

$\begin{array}{ll} \phantom{=} 28 \times \dfrac{7}{8} \\ = \dfrac{28}{1} \times \dfrac{7}{8} \\ = \dfrac{7}{1} \times \dfrac{7}{2} & \text{[Simplifying 28 and 8 ⇒ Divide by 4]} \\ = \dfrac{7 \times 7}{1 \times 2} \\ = \dfrac{49}{2} & \\ = 24 \dfrac{1}{2} & \text{[Converting improper to mixed fraction]} \end{array}$

∴ The answer is 24 $\dfrac{1}{2}$