Simple calculator

Write a program to simulate a very simple calculator (with no brackets,
nor priorities, nor associativeness of the operators).

Input

Input starts with the number of computations. All operands are real
non-negative numbers written in the usual way. The operators of sum,
substraction, product and division (‘+’, ‘-’, ‘’ and ‘/’, respectively).
An ‘=’ indicates the end of the current computation. Input can contain
several spaces between the operators and the operands, but is
syntactically correct.

Output

For each computation, print its result with 5 digits after the decimal
point. Print “ERROR” for any computation that has any division by zero.

Problem information

Author: Unknown
Translator: Carlos Molina

Generation: 2026-01-25T10:27:00.685Z

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