Xiaohong has a rope that is 35 meters long. She used 9.71 meters for the first time and 6.29 meters for the second time. How many meters is left on the rope?
小红有一根绳子长35米，第一次用去了9.71米，第二次用去6.29米，这根绳子还剩多少米？
<gadget id="calculator">35 - 9.71 - 2.29</gadget>
<output>23</output>

<result>23</result>