Hard math problem;can you answer it

A box laundry detergent contains 35 cups.
It takes 1 1/4 cups per load of laundry.
How many loads can you wash with one box
How many loads can you wash with 3 boxes
Please?

35 cups per box/1.25 per load= 28 loads per box.
3 boxes x 28 loads per box = 84 loads per 3 boxes.

1 box u can wash 28 loads.
3 boxes u can wash 84 loads.

Box=35 Cups
1 Load= 1.25 Cups

1/
28
2/
84

One box= 28 loads
Three boxes= 84 loads