A rope is 30 meters long, first (1/3) is used up, and then 2 meters are used up, how many meters are shared?
一根绳子长30米，先用去了(1/3)，又用去了2米，共用去了多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">30 * (1/3)</gadget>
<output>10</output>

<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<result>12</result>