Divide a 4.8-meter-long copper bar into three sections according to 3:4:5. What is the longest section in meters?
把4.8米长的铜条，按3：4：5分成三段，最长的一段是多少米．
<gadget id="calculator">3 + 4 + 5</gadget>
<output>12</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">4.8 * (5/12)</gadget>
<output>2</output>

<result>2</result>