#!/usr/bin/env python
# -*- coding: utf-8 -*-
# rpn.py
# 逆ポーランド記法を使った電卓プログラム
# 標準入力の行ごとに計算する

import sys
import string

stack = []

def rpn(x):
    if x == '+':
        stack.append(stack.pop() + stack.pop())
    elif x == '-':
        stack.append(stack.pop(-2) - stack.pop())
    elif x == '*':
        stack.append(stack.pop() * stack.pop())
    elif x == '/':
        stack.append(stack.pop(-2) / stack.pop())
    else:
        stack.append(string.atof(x))

for s in sys.stdin.readlines():
    s = s.strip()
    print s,
    l = s.split()
    stack = []
    for x in l:
        rpn(x)
    print '=>', stack