Answer
Raji made a mistake with the unit conversions.
Work Step by Step
In the given problem, Raji made a problem with unit conversions. One cannot divide the unit of inches by feet to get an answer. Instead, Raji should have done this:
$$ =\frac{18 \ in \times \frac{1 \ ft}{12\ in}}{2 \ ft}\\ \frac{1.5}{2} \\ \frac{3}{4}$$
