What should come in place of the question mark (?) in the following question ?
$$5\times?=8042\div4$$
$$206\times 71-12080=?$$
$$\frac{3}{7}\div\frac{9}{14}\times\frac{6}{11}=?$$
$$\sqrt{?}+22=\sqrt{2601}$$
$$2\frac{4}{5}-1\frac{3}{8}+3\frac{1}{2}=?$$
14% of 905+?=287
$$2073.5\div(22\times 14.5)=?$$
$$6824+7864=?\times 40$$
$$10000\div 100\div10=?$$
$$(49)^{2}\times(7)^{8}\div(343)^{3}=(7)^{?}$$