Answer:
If it was 750,000 liters it would be 750 liters
Explanation:
Bill can solve this by first thinking that 1 liter is 1,000 milliliters. Then 1,000 times 750 equals 750,000. Then he would do 750 times 1 and get 750. Bill would then realize that 750,000 milliliters is equal to 750 liters