2,34(56)=2+1711/4950=11611/4950
13,25(3)=13+19/75=994/75
56,2(5)=56+23/90=5063/90
43,2(34)=43+116/495=21401/495
\(2,34\left(56\right)=2,34+\frac{1}{100}.56.\frac{1}{99}=\frac{11611}{4950}\)
\(13,25\left(3\right)=13,25+\frac{1}{100}.3.\frac{1}{9}=\frac{994}{75}\)
\(56,2\left(5\right)=56,2+\frac{1}{10}.5.\frac{1}{9}=\frac{5063}{90}\)
\(43,2\left(34\right)=43,2+\frac{1}{10}.34.\frac{1}{99}=\frac{21401}{495}\)