I have this question and im stuck on it , could someone help please!!!

Questions:

COnstruct a Turing Machone which adds 3 unary numbers. (following is an example of what your TM mchine is expected to do: If we want to carry out additation 2+3+4=9, then we place aabaaabaaaa^^.. onto the Tape and would expect the TM to produce aaaaaaaaa^^...and halt.


Someone please give me answer!!!