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

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here’s the simulator version, Turing Tumble Simulator

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