So if you wanted to add the values of row 1 and 2 together in column 1 you would enter '''=[1,1]+[2,1]'''.
To minimize divide by zero errors, you can first check if the denominator is 0 (and set value to 0) by using the following syntax:
<pre>=(ssParseNum([1,3])==0 ? 0 : ([1,2]/[1,3])*100)</pre>
==Adding a formula to a cell (working with data in the different sections)==
<pre><!--@sscalculation(format("@xml.fieldname.sectionnodename.rownodename.columnodename.nodevalue@",2))--></pre>
* Extract a filtered row count from a '''dynamic''' XML section.
<pre><!--@sscalculation(@xml.XML Field.People.Person[#(?criteria="~type.nodevalue~" == "A") 1+#]@ 0)--></pre>
* Extract a percentage value and '''format with two decimal places'''. If pulled from a '''dynamic''' XML section then you will see multiple values.