(-2×5)³-(-1又7/9)×(-3/4)²-(-1/0.1)²÷(-0.1)³
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(-2×5)³-(-1又7/9)×(-3/4)²-(-1/0.1)²÷(-0.1)³
(-2×5)³-(-1又7/9)×(-3/4)²-(-1/0.1)²÷(-0.1)³
(-2×5)³-(-1又7/9)×(-3/4)²-(-1/0.1)²÷(-0.1)³
(-2×5)³-(-1又7/9)×(-3/4)²-(-1/0.1)²÷(-0.1)³
=(-10)³-(-16/9)×9/16+100×1000
=-1000-1+100000
=998999