The two ropes are 1.27 meters and 1.35 meters long respectively. Connect them, and use 0.2 meters of rope at the interface. How long is the rope after connecting?
两条绳子分别长1.27米和1.35米，把它们接起来，接口处用去绳子0.2米，接好后的绳子有多长？
<gadget id="calculator">1.35 - 0.2</gadget>
<output>1.15</output>

<gadget id="calculator">1.27 + 1.15</gadget>
<output>2.42</output>

<result>2.42</result>