Getting value from summary memo

Juhas

Hi, I've got a report - simple table with numeric values.
I've got summary for every column.

My summary is simple: SUM(colName) - made using SysMemo.

Now, I have to count something. I have to use values from summary, but I don't have any idea how to do this.
When I tried:

var
  i: integer;
begin
  i:=StrToInt(summaryMemo.Text);
end;

I got a message that "SUM(colName)" isn't integer value.
So how to get counted value from summary memo?