2/5 multiply times 2(because .1=1/10).
that equals 4/10
in decimal form that is .4(again, because .1=1/10).
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You divide 2 by 5.
4/5 as a decimal is 0.8
5 divided by 8
The fraction 2/5 written as a decimal is 0.4
2/5 = 0.4