The problem I see with matching " *" is that it'll match zero or more spaces - so this'll match between every character, because there are "zero or more" spaces between every character. The plus sign means to match one or more characters, so matching against " +" (space followed by plus) would ...
I don't think there's any kind of search & replace or macro that'll work over multiple files. With Textpad the quickest and easiest I can think of is to copy the original file 25 times. It's probably quicker to use the command line to do this; run: xcopy original.txt p0073.txt Then up arrow ...