For a bundle of wires, 63 meters are used for the first time, and 57 meters are used for the second time. Share 40% of this bundle of wires twice. How many meters is this bundle of wires?
一捆电线，第一次用去63米，第二次用去57米．两次共用去这捆电线的40%．这捆电线共多少米？
<gadget id="calculator">63 + 57</gadget>
<output>120</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">120 / (2/5)</gadget>
<output>300</output>

<result>300</result>