\(\left(10^3+10^4+125^2\right):5^3=\left(2^3\times5^3+2^4\times5^4+5^6\right):5^3\)
\(=5^3\left(2^3+2^4\times5+5^3\right):5^3=2^3+2^4\times5+5^3=213\)
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