A wire is 60 meters long, cut into 4 sections, the first section is 15.3 meters long, the second section is 22.7 meters long, the third section is 16.5 meters long, how many meters is the fourth section?
一根铁丝60米长，截成4段，第一段长15.3米，第二段长22.7米，第三段长16.5米，第四段长几米？
<gadget id="calculator">60 - 15.3 - 22.7 - 16.5</gadget>
<output>5.5</output>

<result>5.5</result>