Simplify $\frac{0.2 \times 0.2 + 0.2 \times 0.02}{0.044}$

The product of two fractions is $\frac{14}{15}$ and their quotient is $\frac{35}{24}$. The greater fraction is

If $3x + 7 = x^2 + P = 7x + 5$,what is the value of $P$?

What should come in place of the question mark $(?)$ in the following equation?
$30.01^{2} - 19.98^{2} - ? = 21.81^{2}$

The simplification of $\left[\frac{1}{2}+\frac{1}{2}\left\{\frac{3}{4}-\frac{1}{2}\left(\frac{7}{8}-\frac{3}{4}\right)\right\}\right]$ yields

The value of $0.008 \times 0.01 \times 0.0072 \div (0.12 \times 0.0004)$ is