There are two ropes, one is 12.56 meters long and the other is 2.5 meters shorter. What is the total length of the two ropes?
有两根绳子，一根长12.56米，另一根比它短2.5米．两根绳子共长多少米？
<gadget id="calculator">12.56 - 2.5</gadget>
<output>10.06</output>

<gadget id="calculator">10.06 + 12.56</gadget>
<output>22.62</output>

<result>22.62</result>