Turing Tumble Community

Simple multiplier

this is my First puzzle, i hope you enjoy!

the goal: figure out how to make Register B multiply Register A and output it onto Register C. (only use the blue marbles and no red marbles)

Hint: Digicomp II

here’s the simulator version, https://jessecrossen.github.io/ttsim/#s=13,17&z=48&cc=6&cr=8&t=1&pt=6&sp=1&sc=0&b=data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAA0AAAASCAYAAACAa1QyAAAA7klEQVQ4T4WTTQ7CIBCFHxvXXbqEM3iANsaDtKn3KBchae9hDEtXxhvA0pXxBMVMDahlbEmawsz7eAw/wlo71nUN+vq+R1VVsNYitnlcaw0RIRI556GUTEDsGOPRtu84AzkRhUqp4NzvOINIQETIfD4Bmig5lWWZHBaYKTUMQ5hqitCaEwtRUJwFwj6k/9w5c5oLOOdF6N9S/0JLtbHQ2mas1sRt/wRprcd5suu6dG5N02TnLaSUGeS8g5IKxhu0ss0MM+j7VnPLozzrFEEOoufDQiQmkGv03gQQwlHucC0e2DwPuBcnbG8el4Wb+wID/Z+wPOQqfAAAAABJRU5ErkJggg==

have you figured it out? let me know, and also consider subscribing to my channel!