Click the name of an operator (name begins with a pound sign) to learn more: 

+, -, *, /	add, subtract, multiply, divide
**	raise a number to a power (exponentiation)
#ABS	Returns the absolute value of a number.
#CEILING	Rounds a number up to the next integer.
#DIV	Divides two numbers, but returns zero upon division by zero.
#EXP	Raises the number e (2.718281828...) to some power.
#FLOOR	Rounds a number down to the next integer.
#INT	Truncates the fractional part of a number.
#LN	Returns the natural log (logarithm base e) of a number.
#LOG	Returns the logarithm of a number.
#MAX	Returns the maximum (larger) of two numbers.
#MIN	Returns the minimum (smaller) of two numbers.
#MOD	Divides two numbers and returns the remainder (called the modulus).
#ROUND	Rounds a number to the specified number of places, or by default to the nearest integer.
#SIGN	Returns the sign (-1, 1, or 0) of a number.
#ZMINUS	Subtracts two numbers, with a result not less than 0.