Evaluate Arithmetic Expressions

You are given a list of arithmetic expressions. Each expression is a simple binary operation involving two integer operands and one of the four operators: +, -, *, or /. The expressions may contain extraneous spaces. Your task is to evaluate each expression and print the result on a new line.

For division, if the divisor is zero, output ERROR. For any expression that does not strictly follow the format of operand1 operator operand2 (with exactly one operator among the four), output ERROR. Note that division always produces a floating-point result even if it is a whole number (i.e. $8/4$ yields 2.0).

Input Format:

• The first line contains an integer $T$, the number of expressions.
• The next $T$ lines each contain a single arithmetic expression.

Output Format:

• Output $T$ lines, where each line contains the evaluation result of the corresponding expression. For invalid expressions or division by zero, print ERROR.

inputFormat

The first line is an integer $T$ indicating the number of expressions. Each of the following $T$ lines contains one arithmetic expression which may include spaces.

outputFormat

Output $T$ lines, each corresponding to the result of evaluating the arithmetic expression from the input. For division, the result must be in floating-point format (e.g. 2.0), and if an expression is invalid or attempts division by zero, output ERROR.

## sample

7
2+3
4-5
6*7
8/4
10/0
2**3
5 +

5
-1
42
2.0
ERROR
ERROR
ERROR

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