$36 + 451 \div 11$

$(6990 \div 15) \times (468 \div 18) = ?$

$6894.986 + 5025.005 + 600.020 = ?$

On dividing a number by $56$,we get $29$ as remainder. On dividing the same number by $8$,what will be the remainder?

$A$ number when divided by a certain divisor leaves a remainder of $241$. When twice the number is divided by the same divisor,the remainder is $112$. Find the divisor.

If $\frac{1}{2}$ is added to a number and the sum is multiplied by $3,$ the result is $21.$ Then the number is (in $.5$)