text: #!/usr/bin/env python
  # coding: utf-8
  
  # In[1]:
  
  
  def sumar(a, b):
      return a + b
  
  def restar(a, b):
      return a - b
  
  def mult(a, b):
      return a * b
  
  def div(a, b):
      return a / b
  
  
  # In[ ]:
  
  
  
  
  