A rope is 5.1 meters long, 2.32 meters are cut off for the first time, and 1.78 meters are cut off for the second time. How many meters were cut off twice?
一根绳长5.1米，第一次剪去2.32米，第二次剪去1.78米．两次共剪去多少米？
<gadget id="calculator">2.32 + 1.78</gadget>
<output>4.1</output>

<result>4.1</result>