Big files can be a pain.
Make them a pain no longer by using Chainsaw, a file splitting tool. It's very easy to use. Start the program, drag and drop your big file into the chainsaw window, then it will cut the file into specific sized pieces. If you want to put one big program onto multiple floppy disks, you'll want 1.44 Megabyte chunks. The split file chunks will be placed in the same directory as the original file and the chunks need to be in the same directory that the batch file is when you reassemble.