that is 10 cups
80 fluid ounces (8 fl. ounces per cup).
That is 1.25 cups.
10 cups is 80 fluid ounces. (US)
10 cups. 8 fluid ounces=1 cup, so 80 fluid ounces*1 cup/8 fluid ounces=80/8 cups=10 cups.
80 cups is 640 fluid ounces. (US)
That is 10 cups.
80
10 fluid ounces equals 1 and 1/4 cups.
80 US cups = 640 US fluid ounces
10 cups = 80 fluid ounces
Peanut butter is usually sold by weight (mass) not volume, so the 80 oz is not fluid ounces. But if you had a jar which was 80 fluid ounces, then there are 8 fluid ounces in 1 cup, so it would be 10 cups.
10 cups is 80 US fluid ounces.