63 + 3 . 62 + 33 / -13
= 23 . 33 + 3 . 22 . 32 + 33 / -13
= 33 . 8 + 33 . 4 + 33 / -13
= 33 . (8 + 4 + 1) / -13
= 27 . 13 / -13
= -27
\(\frac{6^3+3\cdot6^2+3^3}{-13}=\frac{2^3\cdot3^3+3\cdot2^2\cdot3^2\cdot3^4}{-13}=\frac{3^3\cdot8+3^3\cdot4+3^3\cdot1}{-13}=\frac{3^3\cdot\left(8+4+1\right)}{-13}=\frac{3^3\cdot13}{-13}=3^3\cdot\left(-1\right)=-27\)