What is 9/2 divided by 2/9?

How to divide 9/2 by 2/9?

\frac{9}{2} \div \frac{2}{9} = \frac{9 × 9}{2 × 2} = \frac{81}{4}

Invert the divisor (2/9) to get its reciprocal: 9/2
Multiply the dividend by this reciprocal : 9/2 × 9/2 = (9 × 9)/(2 × 2) = 81/4.
Since 81/4 is an improper fraction, it could also be written as $20 \frac{1}{4}$ .

The result of dividing 9/2 by 2/9 is : 81/4 (or 20.25 in its decimal form)