What is 81/18 Divided By 2/5

Solving $\frac{81}{18}\div\frac{2}{5}$

• Rewrite the Division as Multiplication by the Reciprocal:

$\frac{81}{18} \div \frac{2}{5} = \frac{81}{18} \times \frac{5}{2}$

• Multiply the Numerators: $81 \times 5 = 405$
• Multiply the Denominators: $18 \times 2 = 36$
• Form the New Fraction: $\frac{81}{18} \times \frac{2}{5} = \frac{405}{36}$

Let's Simplify $\frac{405}{36}$

• Find the Greatest Common Divisor (GCD) of $405$ and $36$. The GCD of $405$ and $36$ is $9$.
• Divide both the numerator and the denominator by the GCD:$\frac{405 \div 9}{36 \div 9} = \frac{45}{4}$

Answer $\frac{81}{18}\div\frac{2}{5} = \frac{45}{4}$

The following animation demonstrates the divide-by,