Problem:

Compute the mean of ${\frac{27}{\pi }, -\frac{23}{\pi }, -\frac{7}{\pi }, -\frac{28}{\pi }}$.

import math

from statistics import mean
values = (27/math.pi), -(23/math.pi), -(7/math.pi), -(28/math.pi)
print(mean(values))
