$18 \times 16 - 3445 \div 13 = ? - 344$

In a division sum,the divisor $d$ is $10$ times the quotient $q$ and $5$ times the remainder $r$. If $r = 46$,the dividend will be:

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:

$499.99 + 1999 \div 39.99 \times 50.01 = ?$

The sum of five consecutive even numbers of set $A$ is $220$. What is the sum of a different set of five consecutive numbers whose second lowest number is $37$ less than double of the lowest number of set $A$?

$\left[ {8\left\{ {\left( {\frac{{21 \times \sqrt {\frac{9}{{441}}} }}{5} \text{ of } 60\% - \frac{1}{5}} \right) \times 625 + 7} \right\} \div 4} \right] = ?$