For the following questions answer them individually
$$3\frac{3}{6} + 4\frac{1}{2}-2\frac{2}{3}-1\frac{11}{12}=?$$
$$\frac{414 \div 23 \times 7 + 36}{7^{2}+(3^{2}-2^{2})}=?$$
$$\sqrt{444 \div 37 + 15 + 11 \times (?)} = 7$$
$$(0.6)^{4} \times (0.36)^{2} \times (0.216) = (0.6)^{(?)}$$