A rope was used for 6.6 meters for the first time, and 3.8 meters for the second time, leaving 5.6 meters. How much shorter is the rope than the original?
一根绳第一次用去了6.6米，第二次用去了3.8米，还剩下5.6米，这根线比原来短了多少米？
<gadget id="calculator">6.6 + 3.8</gadget>
<output>10.4</output>

<result>10.4</result>