1/3 of 3/4 can be written as
1/3 * 3/4, because in this case, “of” means “multiplied by”.
To solve, multiply the numerators and denominators.
1 * 3 = 3
3 * 4 = 12
The new fraction is 3/12, which can be simplified to 1/4.
Answer: Robin drinks 1/4 of a gallon of milk.