For the following questions answer them individually
$$(5994 \div 18) \times (468 \div 18) = ?$$
$$\frac{16}{29} \times \frac{87}{128} \times \frac{16}{21}=?$$
$$\sqrt{4489} - \sqrt{2601} = \sqrt{?}$$
(0.8 $$\times$$ 8800 $$\div$$ 16) $$\times$$ 4 = ?
