$\frac{17}{29} \times \frac{87}{102} \times \frac{48}{27} \times \frac{3}{2} = ?$

$26.5 \%$ of $488 = ?$

The sum of the digits of a two-digit number is $8$. If the digits are reversed,the number is increased by $54$. Find the number.

The least prime number is

In a two-digit number,the digit in the unit's place is $1$ more than twice the digit in the ten's place. If the digits in the unit's place and the ten's place are interchanged,the difference between the new number and the original number is $1$ less than the original number. What is the original number?

$24$ is divided into two parts such that $7$ times the first part added to $5$ times the second part makes $146$. The first part is