题目不懂，不知道如何换算

题目不懂，不知道如何换算

A solid yellow stripe is to be painted in the middle of a certain highway. If 1 gallon of paint covers an area of p square feet of highway, how many gallons of paint will be needed to paint a stripe t inches wide on a stretch of highway m miles long? (1 mile = 5,280 feet and 1 foot = 12 inches) (5,280 mt ) /12 p (5,280 pt ) /12 m (5,280 pmt ) /12 (5,280 )(12 m ) /pt (5,280 )(12 p ) /mt