READ-EVAL-PRINT-LOOP Write a simple REPL program (Read–Eval–Print–Loop). Take a formula from a user then print out the result. The formula must be in this format: <first number> <arithmetic: + - * / > <second number> Example: > 1 + 2 1 + 2 = 3 > 2 * 10 2 * 10 = 20