A road is 25 kilometers long. Repaired its (2/5), how many kilometers have been repaired?
一条公路长25千米．修了它的(2/5)，修了多少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">25 * (2/5)</gadget>
<output>10</output>

<result>10</result>