Answer:
Okay, so..if i am thinking correctly you would have to times the numbers the original way that you would multiply anything with... then the remainders im sure that you probably just have to add those in...
(listen i am not so sure about this, i am in 6th grade...but hopefully i helped a little, sorry if i didn't help at all, i rly am... :) )
Explanation:
HOPE I HELPED SORRY IF NOT, DON'T COUNT ON MY HELP..
I really am sorry if i didn't help y'all out... :/
<3