Xiaoming's family used 14 tons of water last month, and this month saved (1/7) compared to last month. How many tons are saved?
小明家上个月用水14吨，这个月比上个月节约了(1/7)．节约了多少吨？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">14 * (1/7)</gadget>
<output>2</output>

<result>2</result>