A batch of goods is 50 tons, and (1/3) of it is transported away for the first time, and (1/4) of it is transported away for the second time, what fraction of the goods remains?
一批货物50吨，第一次运走它的(1/3)，第二次运走它的(1/4)，还剩这批货物的几分之几没运走？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/3) - (1/4)</gadget>
<output>5/12 = around 0.416667</output>

<result>5/12 = around 0.416667</result>