The road construction team plans to build a road of 4 kilometers, and it has been repaired (3/5). How many kilometers have been repaired?
修路队计划修路4千米，已经修了(3/5)，修了多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 * (3/5)</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>