400 multiplied by 8 is 3,200
80 multiplied by 15 is 1200.
88,400,000,000
400%
It is 100*(400/80) = 500%
40
I suggest 80 * 410 = 80 * 400 + 80 * 10 = 32000 + 800 = 32800.
80
400 multiplied by 20 is 8,000
400 multiplied by 8 is 3,200
80 multiplied by 15 is 1200.
80 = 400/5
20000 + 6000 + 400 + 80 + 920000 + 6000 + 400 + 80 + 920000 + 6000 + 400 + 80 + 920000 + 6000 + 400 + 80 + 9
88,400,000,000
400%
It is 100*(400/80) = 500%
90,000 multiplied by 400 is 36,000,000.