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4 x 20 = 80
80
80 x 4 = 320
2.9906975624424411 to the power of 4 equals 80.
20
it equals 156-56-80+4
496 times 80/100, 4/5, .8, or 8% equals 396.8
80/A
90 times 80 = 7200
53 times 80 equals 4240.