First find the value of both mixed numbers as improper fractions.
2 1/7= 15/7.
1 1/4= 5/4
To divide fractions, multiply the first number by the reciprocal of the other. To multiply fractions, multiply the numerators and the denominators together.
(15/7)* (4/5) = 60/35
60/35= 12/7
Final answer: 12/7 or 1 5/7