well there are 16 ounces in a pound... so u need to have 16 x 5 = 80 and 16 x 1/2 = 8 so 80 + 8 = 88. then u need to do 88 ÷ 9 which would equal less than 10 but greater than nine, so u need to round it to the next whole number so it would be 10 because its okay if one container isn't completely full