How to divide mixed numbers? and multiply fractions

To divide mixed number, convert to improper fractions and divide them

(a/b) / (c/d) = (a/b) (c/d) = (ac) / (bd)

to multiply fractions, multily top by top and bottom by bottom

(a/b) (c/d) = (a times c) / (b times d)

To divide mixed numbers you turn them into an improper fraction, and then multiply the reciprocal (the fraction flipped)

ex: 2 3/4 divided by 2 3/4 = 11/4 divided by 11/4 = 11/4 times 4/11 and then multiply across. so, 11 times 4 = 44 and 11 times 4 = 44, so 44/44 then simplify, so 1 is the answer. then how to multiply fractions, is simply multiply across.