Function group number

Function group has those functions and groups:

• Function + - If all the arguments are number, add them.
• Function - - If there are two numeric arguments, substract the second argument from the first one if both are number.
• Function * - If all the arguments are number, multiply them.
• Function / - Divide the firs argument by the second argument. If the second argument is 0 will return nothing
• Function % - Find the reminder of the division of the firs argument by the second argument. If the second argument is 0 will return nothing
• Function abs - If the argument is numeric, return it's absolute value.
• Function round - If the argument is numeric, return it's rounded.
• Function ceil - If the argument is numeric, return it's ceiling.
• Function floor - If the argument is numeric, return it's floor.

Use additional help with a function name to see more details about the function.