5b^2 + (-2b) + 7 __________________________ 6b + 3 | 30b^3 + 3b^2 + 36b + 30 - (30b^3 + 15b^2) --------------- -12b^2 + 36b - (-12b^2 + (-6b)) -------------- 42b + 30 - (42b + 21) -------- 9