Xiaogang’s family used 12 tons of water in September, saving (1/3) compared to October. How many tons of water did Xiaogang’s family use in October?
小刚家九月份用水12吨，比十月份节约了(1/3)，小刚家十月份用水多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">12 / (2/3)</gadget>
<output>18</output>

<result>18</result>