[tex]0.0(5) = \frac{5}{90} = \frac{1}{18} [/tex]
[tex]1.2(3) = \frac{123 - 12}{90} = \frac{111}{90} = \frac{37}{30} [/tex]
[tex]sau[/tex]
[tex]1.2(3) = 1 \frac{23 - 2}{90} = 1 \frac{21}{90} = \frac{1 \times 90 + 21}{90} = \frac{90 + 21}{90} = \frac{111}{90} = \frac{37}{30} [/tex]
