Sphere Volume Calculation

Given a sphere with radius \(r\), its volume is computed using the formula:

\( V = \frac{4}{3} \pi r^3 \)

In this problem, you are required to calculate the volume of a sphere with a given radius \(r\). Use \(\pi = 3.14\) for your computations.

inputFormat

The input consists of a single number \(r\) representing the radius of the sphere. \(r\) can be an integer or a floating-point number.

outputFormat

Output the volume of the sphere computed by the formula \( V = \frac{4}{3} \times 3.14 \times r^3 \). The result should be printed with six decimal places.

sample

1

4.186667