Answer:
91/80 = 1 11/80
Explanation:
5 1/18 ÷ 4 4/9 change the mixed fraction to improper one
91/18 ÷ 40/9 ( when divide fraction turn the division sign into multiplication and flip the second fraction( reciprocal))
91/18 × 9/40 simplify
91/2 × 1/40 = 91/80 = 1 11/80