Find the quotient when $73-37$ is divided by $4$

Show that $527+752+275$ is exactly divisible by $14$

if  $\mathrm{c}>a$ show that $\mathrm{cba}-\mathrm{abc}=99\left(\mathrm{c}-\mathrm{a}\right)$

If $\mathrm{a}=c$ show that $\mathrm{cba}-\mathrm{abc}=0$.

Find the values of $A$ and $B$.

$\begin{array}{cc}3& A\end{array}+\begin{array}{cc}2& 5\end{array}\begin{array}{cc}B& 2\end{array}$