Algodoo

I want to tell you something.
The RED gear has 128 exter. gears. The GREEN gear has 64 exter. gears.
The tracer from GG (green gear) pass that one from RG( red gear) 1 time, then 1 time not.
The transmission speed is 1:2.
But the YG tracer(yes, yellow gear) paas that from RG one time, then 3 times not, then one time etc.
Transmission speed is 1:4.
How much Exter. gears has YG?
The first one answers good, descripts a scene, i create it.
The scene calls: Scene for EXAMPLE.
Good luck!