There are two ropes, the first one is 12.8 meters, and the second one is 2.7 meters shorter, what is the total length of the two ropes?
有两根绳子，第一根12.8米，比第二根短2.7米，两根绳子共长多少米？
<gadget id="calculator">12.8 + 2.7 + 12.8</gadget>
<output>28.3</output>

<result>28.3</result>