Custom field and list view totals

Question

I have created a custom field that inerits from a SPFieldMultiColumn. It stores the area size like this:

10;#km

25;#km

I want to use this field in totals for list view. Is it possible to summarize the numerical values?

Answer 1

You can do this by creating new calculate column, get numerical values from your SPFieldMultiColumn to this calculated column and then summarize by this new calculated column like in this post