$\cot\left(37\right)-\cot\left(53\right)$

$\frac{45}{54\:}\:\:,\:\:\frac{5}{6}$

$\frac{\cos\left(x\right)-\sin\left(x\right)^2}{\sin\left(x\right)}$

$\arcsin\left(0.4105\right)$

$\frac{10a^7b^9}{15a^5b^9}$

$\frac{3x^3+3x^2-7x^2-3}{x^2+1}$

$-2\:+\:9\:+\:5\:+\:6\:+\:3\:+\:3$