A rope is 9.8 meters long, subtract 5.2 meters for the first time, and subtract 3.7 meters for the second time. How much shorter is the rope than the original?
一根绳子长9.8米，第一次减去5.2米，第二次减去3.7米．这根绳子比原来短了多少米？
<gadget id="calculator">5.2 + 3.7</gadget>
<output>8.9</output>

<result>8.9</result>