It's 3MB in size. It takes about 3MB on the root FS to install. It asks you where you want to put the data, MMC1 or MMC1 (Thanx ukki and arnims!). And then it takes 17MB on your MMC card. Then it deletes the 2.9MB compressed data file, so it only takes a few hundred K on the root FS.
Of course, this assumes the user account is "user" on all the tablets...