3 1/3 / 1 5/12
As a common fraction, 3 1/3 = (3 x 3 + 1)/3 = 10/3
And, 1 5/12 = (1 x 12 + 5)/12 = 17/12
To divide common fractions, multiply by the reciprocal:
(10/3) ÷ (17/12) = (10/3 x (12/17) = (10 x 12) / (3 x 17) = 120/51 = 40/17