A pile of coal has 12 tons, and its (1/4) is transported, and how many tons are transported?
一堆煤有12吨，又运来它的(1/4)，又运来多少吨？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">12 * (1/4)</gadget>
<output>3</output>

<result>3</result>