$\frac{dw}{dy}=\frac{x\sin\left(xy\right)-z\cos\left(yz\right)}{z}$

$f\left(x\right)=\frac{\cos\left(x\right)}{\sin\left(x\right)}$

$2^7\cdot2^8$

$5d-7+2c-7d+3$

$\frac{1}{2}\times8\times10$

$\lim_{x\to\infty}\left(\frac{3x^2-5x+18}{x^2+4x+6}\right)$

$\left(m^{10}n^6-64y^2\right)$