8/28=4/14=2/7
2/7 is simplest form
Not 100% sure but hopefully this helps
Assuming that means you make $0.06 per box (1/18 dollars per box) then you've made $4.17 off of the 75 boxes. 180-4.17 = 175.83 / .06 = 3165 more boxes.
You'd need to sell 3,165 more boxes.
