1. The problem is to find the cube of a fraction, which means raising the fraction to the power of 3. 2. Let the fraction be $\frac{a}{b}$, where $a$ is the numerator and $b$ is the denominator. 3. The cube of the fraction is calculated as: $$\left(\frac{a}{b}\right)^3 = \frac{a^3}{b^3}$$ 4. This means you cube the numerator and the denominator separately. 5. For example, if the fraction is $\frac{2}{3}$, then: $$\left(\frac{2}{3}\right)^3 = \frac{2^3}{3^3} = \frac{8}{27}$$ 6. So, the cube of a fraction $\frac{a}{b}$ is $\frac{a^3}{b^3}$, which you can calculate by cubing numerator and denominator individually.