$958 \times 21 \div 4 = ?$

$\frac{1}{16}$ of $8432 + 50 \%$ of $? = 4429$

The expression $\frac{8.25 \times 8.25 + 6.75 \times 6.75 - 2 \times 8.25 \times 6.75}{8.25 \times 8.25 - 6.75 \times 6.75}$ when simplified equals:

The square root of $\left[\frac{(3.25)^{3}}{3.25-1}-\left(3.25+(3.25)^{2}+1\right)\right]$ is equal to

If the sum of a number and its square is $182$,what is the number?

$1523.89 \div 19.95 + 496.28 + 249.927 = ?$