Example:

  > (+ 1 2)
  3        

Examples:

  > (+ 3 4)            
  7                    
  > (string-append "5" 
                   "6")
  "56"                 

  > (+ 2 3)
  5        

Another example:

  > (+ 2 4)
  6        

Examples:

> (+ 2 5)
7        
> (* 3 4)
12       

Examples:

  (+ 2 6)
  8      
  (* 3 5)
  15     

"Just the result."

Example:

  > (syntax-line (quote-syntax here))
  45                                 

  "don't show the result"

  #lang racket/base      
  (define x "don't show")
  "the result"           

Example:

  > (/ 1 0)          
  /: division by zero

Example:

  > (+ 1 2) (* 3 4)
  12               

Example:

  > (+ 1 2)
  3        

Example:

  > (/ 1 0)
  +inf.0   

Example:

  > "(/ 1 0)"
  (/ 1 0)    

Example:

  > "(/ 1 0)"   
  getting +inf.0
  (/ 1 0)       

Example:

  > "(/ 1 0)"   
  getting +inf.0
  oops          
  (/ 1 0)       

Example:

  > (/ 100 0)   
  getting +inf.0
  oops          
  (/ 1 0)       

Example:

  > (/ 100 0)   
  getting +inf.0
  oops          
  (/ 1 0)       
  '=