output_description: Print the total number of biscuits produced within T + 0.5 seconds after
  activation.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      A B T
attempt: # coding:utf-8
  
  import sys
  
  # from collections import Counter, defaultdict
  
  INF = float("inf")
  MOD = 10**9 + 7
  
  
  def LI():
      return [int(x) for x in sys.stdin.readline().split()]
  
  
  def LI_():
      return [int(x) - 1 for x in sys.stdin.readline().split()]
  
  
  def LS():
      return sys.stdin.readline().split()
  
  
  def II():
      return int(sys.stdin.readline())
  
  
  def SI():
      return input()
  
  
  def main():
      a, b, t = LI()
      res = 0
      for i in range(a, 21, a):
          if i < t + 0.5:
              res += b
  
      return res
  
  
  print(main())
  
problem_description: Statement
  
  A biscuit making machine produces B biscuits at the following moments: A
  seconds, 2A seconds, 3A seconds and each subsequent multiple of A seconds
  after activation.
  
  Find the total number of biscuits produced within T + 0.5 seconds after
  activation.
samples: [{"input": "3 5 7", "output": "10\n    \n\n  * Five biscuits will be produced three seconds after activation.\n  * Another five biscuits will be produced six seconds after activation.\n  * Thus, a total of ten biscuits will be produced within 7.5 seconds after activation.\n\n* * *"}, {"input": "3 2 9", "output": "6\n    \n\n* * *"}, {"input": "20 20 19", "output": "0"}]