Homeowners in the United States use more than 15 million pounds of pesticides on their lawns every year. Convert this rate to ounces per day, rounded to the nearest whole number.

1 pound = 16 ounces

15 million x 16 = 240 million

240,000,000 / 365 = 657 534,247 which is approximately 657,534 ounces per day.

or to be more specific; 240,000,000 / 365.25 = 657 084 189 which is approximately 657,084 ounces per day.

i hope i'm correct.