Table (sap.ui.table.table) sum values in columns

Hello everyone ,

I have on problem and if is possibel I need your help.

I'm new in this language. I constructed one table with sap.ui.table.table and put every data inside table. I have an option for group my column.

But I can't do sum of elements, I found this image and I need in my table do the sum of some coluns and I should do something like this

Someone can tell me if is possible do this, i searched but I can't find anything.

Please I need really your help.

Thanks for your time.