How do I make that?
Build five or six print bricks next to each other. Name the one furthest to the right "Clicks_1", the one to the left of that "Clicks_10", the next one to the left of that "Clicks_100" and so on. On every cookie, put the below events:
[0] [x] [0] [OnActivate] [NamedBrick] [Clicks_1] [IncPrintCount] [1]
Every time a cookie is clicked, the brick named "Clicks_1" will have its print count increased by one.
On the brick named "Clicks_1", put the following events:
[0] [x] [0] [OnPrintCountOverflow] [NamedBrick] [Clicks_10] [IncPrintCount] [1]
If brick "Clicks_1" is 9, and the value increases, "Clicks_10" increases by 1 and "Clicks_1" is set to 0. Repeat the above event for all other print bricks, with changes to the NamedBrick.