bang 

In left inlet: Performs the multiplication with the numbers currently stored. If there is no argument, * initially holds 0 as a multiplier. 
int 
input [int]

In left inlet: The number is multiplied by the number in the right inlet, and the result is sent out the outlet. 
(inlet1) 
multiplier [int]

In right inlet: The number is stored for multiplication with a number received in the left inlet. 
float 
input [float]

Converted to int before multiplication, unless * has a float argument. 
set 
setinput [int]

In left inlet: The word set, followed by a number, sets the inlet's input without causing output. 
list 
input [list]

In left inlet: The first number is multiplied by the second number, and the result is sent out the outlet. 