num,den= map(int, input().split())
k=int(input())
p=num/den
geodis=((1-p)**(k-1))*p
print(round(geodis,3))

a,b=map(int,input().split())
p=a/b
q=1-p
n=int(input())
r=(q**(n-1))*p
print(round(r,3))

import math

p = 1/3
q = 1-p
n = 5


def geometricDistribution(successProb, failureProb, position):
    result = (failureProb)**(position-1) * successProb
    print(round(result, 3) )
    
    
geometricDistribution(p, q, n)

def Geometric(n,p):
    return (1-p)**(n-1) * p

nume,deno = list(map(int,input().split()))
n = int(input())
print(f"{Geometric(n,nume/deno):.3f}")