Ken measured the middle school and made a scale drawing. The scale of the drawing was 1 inch : 4 feet. The gym is 44 feet wide in real life. How wide is the gym in the drawing?

So here's what we have so far:
2 mm: 8 m
We can factor out a 2:
1 mm: 4 m
If you want, we can go further by converting into the same unit. A little unorthodox, but just to show how to do it:
1 meter = 1000 millimeters
4 * 1000 = 4000
1 mm: 4000 mm