$8000 \div 16 - 200 = ? \times 6$

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

$4433.764 - 2211.993 - 1133.667 + 3377.442 = ?$

$2^{16}-1$ is divisible by

If doubling a number and adding $20$ to the result gives the same answer as multiplying the number by $8$ and taking away $4$ from the product,the number is

The difference between two positive integers is $3$. If the sum of their squares is $369$,then the sum of the numbers is