import math
from math import sin, tan ,cos, sqrt


a, s, b = input().split(' ')
a = float(a)
b = float(b)
if s in ('+','-','*','/', '**', 'sqrt', 'sin', 'tan'):

  if s == '+':
    summa = a + b
    print(a, '+', b, '=', summa)


  elif s== '-':
    summa = a - b
    print (a, '-', b, '=', summa)

  elif s =='*':
    summa = a * b
    print(a, '*', b , '=', summa)

  elif s == '/':
    summa = a / b
    print(a, '/', b, '=', summa)

  elif s == '**':
    summa = a ** b
    print(a, '**', b, '=', summa)

  elif s == 'sqrt':

    print(sqrt(a))

  elif s == 'sin':

    print(sin(a))

  elif s == 'tan':
    print(tan(a))

  while summa != 0:
    a =     summa
    s, b = input().split(' ')


    b = float(b)
    if s in ('+','-','*','/', '**', 'sqrt', 'sin', 'tan'):

      if s == '+':
        summa = a + b
        print(a, '+', b, '=', summa)


      elif s== '-':
        summa = a - b
        print (a, '-', b, '=', summa)

      elif s =='*':
        summa = a * b
        print(a, '*', b , '=', summa)

      elif s == '/':
        summa = a / b
        print(a, '/', b, '=', summa)

      elif s == '**':
        summa = a ** b
        print(a, '**', b, '=', summa)

      elif s == 'sqrt':

        print(math.sqrt(a))

      elif s == 'sin':

        print(sin(a))

      elif s == 'tan':
        print(tan(a))

      elif s == 'end':