第五次.挑戰題 345(10) = _ (7) = _(5) = _ (3)

345(10) =1002 (7) =2340 (5) =110210 (3)

*7*
345/7=49...2
49/7=7...0
7/7=1...0

*5*
345/5=69...0
69/5=13...4
13/5=2...3

*3*
345/3=115...0
115/3=38...1
38/3=12...2
12/3=4...0
4/3=1...1