8个0.25相乘再乘9个8相乘再乘10个5
0.25^8×8^9×5^10
=[2^(-2)]^8×(2^3)^9×5^10
=2^(-2×8+3×9)×5^10
=2^11×5^10
=2×(2^10×5^10)
=2×(2×5)^10
=2×10^10
=200 0000 0000
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0.25^8×8^9×5^10
=[2^(-2)]^8×(2^3)^9×5^10
=2^(-2×8+3×9)×5^10
=2^11×5^10
=2×(2^10×5^10)
=2×(2×5)^10
=2×10^10
=200 0000 0000