$\left(3c-a\right)\left(-2a+6bc\right)$

$\lim_{x\to-3}\frac{\tan\left(x+3\right)}{x+3}$

$8\sin\left(x\right)=1+\frac{4}{\csc\left(x\right)}$

$\frac{400}{100}$

$\frac{-4x^5-3}{x^3}$

$\lim_{x\to2}\left(\frac{1}{\ln\left(x-1\right)}-\frac{2}{x-2}\right)$

$\frac{1+\csc\left(m\right)}{1+\sin\left(m\right)}$