answer: 12
To divide by a fraction make both numbers fractions in this case 4 can be 4/1
So it would now be
(4/1) / (1/3)
Then do keep, change, change
Keep (4/1)
Change the division to multiplication
And change (1/3) by find the reciprocal fraction (3/1)
^you flip the numerator and denominator
Then solve:
(4/1) x (3/1) = 4 x 3 = 12