0,1 = 1/10
1,23 = 123/100
12,345 = 12345/1000
0,(1) = 1/9
1,(23) = (123 – 1)/99
12,(345) = (12345 – 12)/999
0,1(2) = (12-1)/90
1,23(45) = (12345 – 123)/9900
12,34(567) = (1234567 – 1234)/99900
0,7=7/10
1,36=136/100
23,697=23697/1000
0,(3)=3/9
2,(4)=24-2/9=22/9
4,(16)=416-4/99=412/99
1,2(3)=123-12/90=111/90
2,58(936)=258936-258/99900=258678/99900
1,43=143/100
25,897=25897/1000
1,56=156/100
