0
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0.2
821/40 = 8.525
.8
8 21/40 = 8.525
The answer is 0.4
8 + 212 + 40 = 860.
Its .375
8 over 40 cancels to a fifth. A fifth = 0.2.
8/20 = 0.4 = 40%
5/40 = 1/8 = 0.125
8 21/40 = 821/40= 100 divided by 40 times 821 = your decimal
5*8 = 40.