After typing in klapaucius at the cheat dialog (which is opened using Ctrl + Shift + C) you can type ! and ; as many times as you wish to repeat the money grabbing cheat.

However to save you having to type everything again, after finishing the !;!;... line, make any error and when you press enter the message 'Soory No such cheat' comes up. However the money still goes up and you stay in the dialog box. So you just keep pressing Enter.