A light bulb consumes 9900 watt-hours in 5 days and 12 hours. How many watt-hours does it consume per day?

5 days and 12 hours = 132 hours

9900 total watts / 132 hours = 75 watts per hour

Since the light bulb consumes 75 watts an hour, we need to multiply 75 watts by 24 hours, to figure out how many watts are consumed in a day.

75 watts per hour x 24 hours = 1,800 watt-hours per day

What do you mean, there are no least or greatest, those are colors not numbers...