fun main(args: Array<String>) {
    val list = readLine()?.split(" ") ?: listOf()
    val a = Integer.parseInt(list[0] ?: "0")
    val b = Integer.parseInt(list[1] ?: "0")
    val t = Integer.parseInt(list[2] ?: "0")
  
    val cnt = ((t + 0.5f) / a).toInt()
    println(cnt * b)
}
