Yes, as if you said your car was going 50 miles for 2 hours, and did this: 2 ÷ 50 50 ÷ 50, it would equal 0.04 miles per hour. That is clearly incorrect. But, if you did: 50 ÷ 2 2 ÷ 2, it would equal 25 miles an hour. Conclusion, you must have the unit rate set up as the denominator