$\frac{\left(-ab^2c\right)^{-1}}{a^{-2}bc^{-1}}$

$\frac{\sin\left(t\right)}{\left(1-\cos\left(t\right)\right)}$

$\left(10.5\right)-\left(-30.6\right)$

$\int\left(\ln\left(3t\right)\right)dt$

$\frac{2n}{\left(3^{2n-1}\right)}$

$\lim_{x\to\infty}\left(\frac{x+5}{x\ln x}\right)$

$256\left(-8\right)$