import os
import sys
import numpy as np

if __name__ == "__main__":

    a = float(3 * 5)/(2 + 3)
    b = np.sqrt(7 + 9)*2
    c = (4 - 7) ** 3
    d = (-19+100)**0.25
    e = 6 % 4

print "a = ", a, "\n", "b = ", b, "\n", "c = ", c, "\n", "d = ", d, "\n", "e = ", e 
