(1.25×8 ÷1.25×0.

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(1.25×8 ÷1.25×0.

(1.25×8 ÷1.25×0.8)÷20
=(1.25÷1.25×8×0.8)÷20
=0.64÷20
=0.032

=10/1/20
=10/20
=0-5

1.25