\(\dfrac{6^6+6^3.3^3+3^6}{-73}\)
\(\dfrac{3^6.2^6+3^6.2^3+3^6.1}{-73}\)
\(\dfrac{3^6.\left(2^6+2^3+1\right)}{-73}\)
\(=\dfrac{3^6.73}{-73}=-729\)
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