$34.95 + 240.016 + 23.98 = ?$

$832.58 - 242.31 = 779.84 - ?$

If $x = \frac{4 \sqrt{ab}}{\sqrt{a} + \sqrt{b}}$,then what is the value of $\frac{x + 2 \sqrt{a}}{x - 2 \sqrt{a}} + \frac{x + 2 \sqrt{b}}{x - 2 \sqrt{b}}$ (when $a \neq b$)?

What will come in the place of question mark $(?)$ in the following expression?
$561 \div 35.05 \times 19.99 = ?$

If $x = \frac{a}{a-1}$ and $y = \frac{1}{a-1}$,then

$67.99 \%$ of $1401 - 13.99 \%$ of $1299 = ?$