For a wire, 4.28 meters are used for the first time, 6.38 meters are used for the second time, and 7.34 meters are left. How many meters is the total length of this wire?
一根电线，第一次用去4.28米，第二次用去6.38米，还剩下7.34米．这根电线总长多少米？
<gadget id="calculator">4.28 + 6.38 + 7.34</gadget>
<output>18</output>

<result>18</result>