What's the difference between minus 0.25 square divided by minus half cube + one eighth minus one half? emergency

-0.875
(-0.25)²/(-0.5)³=-0.25*0.25*2*2*2=-0.5
1/8-1/2=0.125-0.5=-0.375
-0.5+(-0.375)=-0.875

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