module Main where

import           Control.Monad
import           Data.List
import           Data.Ord
import           Data.List.Split
import           Data.Array.IO
import qualified Data.Vector            as V
import           Data.Maybe
import           Text.Printf

main :: IO ()
main = do
  [a, b, t] <- map read . words <$> getLine
  print $ (t `div` a) * b
