Editing Scanco User Instructions (section)

===Basic Arithmetic===
The DCL language supports several types of data in variables. In the "Hello, world" example above, we saw how to store a string in a variable. We could have stored an integer, that is a positive or negative whole number, in the variable, and done some basic math.
*Refer to [[Scanco_User_Instructions#Arithmetic_operations|'''Arithmetic Operations''']],  For example:
<pre>
$ i = 1
$ WRITE SYS$OUTPUT i+1
$ j = 3
$ k = j * (i + 1)
$ WRITE SYS$OUTPUT k
$ WRITE SYS$OUTPUT (k / 4)
$ WRITE SYS$OUTPUT 2 + 2 * 2
$ EXIT
will return:

2
6
1
6
</pre>
Two things are worth noting. 
*Because we are limited to integers, division of 6 / 4 needs to return an integer (1.5 is not an integer); the value is truncated, which means rounding is always done toward zero. 
*Order of operations is done in the "correct" order, and not left-to-right, so "2 + 2 * 2" is interpreted as "2 + (2 * 2)".