-2²-(1-1/5*0.2)÷(-2)³=?急

-2²-(1-1/5*0.2)÷(-2)³=?急
-2²-(1-1/5*0.2)÷(-2)³=?急

-2²-(1-1/5*0.2)÷(-2)³=?急
-2²-(1-1/5*0.2)÷(-2)³
=-4+（1-1/25）÷8
=-4+24/25÷8
=-4+3/25
=-3又22/25

-2²-(1-1/5*0.2)÷(-2)³
=-4-(1-0.04)÷(-8)
=-4+0.12
=-3.88
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