$14.28 \%$ of $49 = ?$

$(0.83 \times 0.83 \times 0.83 + 0.17 \times 0.17 \times 0.17)$ is equal to ...........

$69.69 - 51.54 + 73.64 = ? + 32.42$

Find the square root of $(2.25)^{2} + 16 - 4(2.25) - \frac{(2.25)^{3}}{2.25 + 4} ?$

Three numbers are in the ratio $3:4:5$. The sum of the largest and the smallest equals the sum of the third and $52$. The smallest number is

$\frac{(0.146+0.092)^{2}+(0.092-0.146)^{2}}{0.073 \times 0.073+0.046 \times 0.046}$ is equal to