The worker master installed the phone. A bundle of telephone wires used up 15 meters for the first time, and 13 meters for the second time, leaving 60% of the bundle. How many meters was the bundle of telephone wires originally?
工人师傅安电话，一捆电话线第一次用去了15米，第二次用去了13米，还剩下60%，这一捆电话线原来有多少米？
<gadget id="calculator">15 + 13</gadget>
<output>28</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">28 / (2/5)</gadget>
<output>70</output>

<result>70</result>