throttle cable broke

[sprink81]

so my 2000 challenger's right side throttle cable broke and i could use a little advice on how to replace it. i just replaced the reverse cable so routing the cable shouldnt be a problem for me. i dont know how tough the carb end work is? also by the shifter theres a little box on the cable where it splits, where does the other cable go? any help on this before i start the work would be great. thanks in advance