Arithmetic with an integer and a decimal operand

If one operand is an integer and the other operand is decimal, the operation is performed in decimal. The arithmetic operation uses a temporary copy of the integer that has been converted to a decimal number.

The temporary copy of the integer that has been converted to a decimal number has a precision p and scale 0. p is 19 for a big integer, 11 for a large integer, and 5 for a small integer. In the case of an integer constant, p depends on the number of digits in the integer constant. p is 5 for an integer constant consisting of 5 digits or fewer. Otherwise, p is the same as the number of digits in the integer constant.