Dividing with Greater Numbers

there are 12 inches in 1 foot.how many inches are there in 120 feet?

$\small{ \begin{array}{rcll} \dfrac{12\ \text{inches} }{1\ \text{foot}} \cdot 120\ \text{feet} &=& 12 \cdot 120 \ \text{inches}\\ &=& 1440 \ \text{inches}\\ \end{array} }$

120 X 12=1,440 inches in 120 feet