[tex]2.3(6) = \frac{236 - 23}{90} = \frac{213}{90} = \frac{71}{30} [/tex]
[tex]1.2(9) = \frac{129 - 12}{90} = \frac{117}{90} = \frac{39}{30} = \frac{13}{10} [/tex]
[tex] 3.70(2) = \frac{3702 - 370}{900} = \frac{3332}{900} = \frac{1666}{450} = \frac{833}{225} [/tex]
[tex]1.2(417) = \frac{12417 - 12}{9990} = \frac{12405}{9990} = \frac{2481}{1998} [/tex]
