text: var PI= 3.1416;
  
  function sumar(a,b){
      return a + b;
  }
  
  function restar(a,b){
      return a - b;
  }
  
  function multiplicacion(a,b){
      return a * b;
  }
  
  function dividir(a,b){
    
       if (b == 0) 
       {
          Error();
       }else 
       {
       	return a/b;
       }
  }
  
  function Error(){
  	console.log("No se puede dividir entre cero");
  }
  
  
  exports.sumar = sumar;
  exports.restar = restar;
  exports.multiplicacion = multiplicacion;
  exports.dividir = dividir;
  exports.PI = PI;
  
  
  
  
  
  
  
  