A bundle of wires, after 28.3 meters are used up, there are 37.7 meters left, how many meters is this bundle of wires originally?
一捆电线，用去28.3米后，还剩37.7米，这捆电线原来有多少米？
<gadget id="calculator">28.3 + 37.7</gadget>
<output>66</output>

<result>66</result>