The first number to be calculated. The default value is 0. The data type is Number.
number2
The second number to be calculated. The default value is 0. The data type is Number.
precision
The number of digits to be retained after decimal point in the calculation results. The default value is -1, which means original calculation results are returned.
Note Nonnumeric strings in number1 and number2 are regarded as the default value 0.
Return
Returns the value of number1 minus number2 with HALF_EVEN rounding.