One wire is 10.4 meters long and the other wire is 0.8 meters longer. What is the total length of the two wires?
一根电线长10.4米，比另一根电线长0.8米，两根电线共长多少米？
<gadget id="calculator">10.4 - 0.8</gadget>
<output>9.6</output>

<gadget id="calculator">9.6 + 10.4</gadget>
<output>20</output>

<result>20</result>