x:9=c₁ rest c₁+1
R<I
C<R
C<R<I
x=M₉+ c₁+1
x=M₉+1
1)C=1=>R=0
x=9*1+0
x=9+0
x=9
2)C=2=>R=1
x=9*2+1
x=18+1
x=19
3)C=3=>R=2
x=9*3+2
x=27+2
x=29
4)C=4=>R=3
x=9*4+3
x=36+3
x=39
5)C=5=>R=4
x=9*5+4
x=45+4
x=49
6)C=6=>R=5
x=9*6+5
x=54+5
x=59
7)C=7=>R=6
x=9*7+6
x=63+6
x=69
8)C=8=>R=7
x=9*8+7
x=72+7
x=79
