print "the value of q"
q = float(input())
print "the value of t"
t = float(input())
print "the value of r"
r = float(input())
print "the value of h"
h = float(input())
print "the value of l"
l = float(input())
print "the value of f"
f = float(input())
print "the value of chp"
chp = (q*l)/(h*3.14*r*r*t)
print chp
