There are two wires, one is 12 meters long and the other is 13 meters long. After the two wires are cut to the same length, the remaining wire is the other wire (8/13). How many meters have you cut? ．
有两根电线，一根长12米，另一根长13米，两根剪下同样长的一段后，剩下的一根电线是另一根的(8/13)，剪下了多少米．
<gadget id="calculator">8 / 13</gadget>
<output>8/13 = around 0.615385</output>

<gadget id="calculator">13 * (8/13)</gadget>
<output>8</output>

<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<gadget id="calculator">1 - (8/13)</gadget>
<output>5/13 = around 0.384615</output>

<gadget id="calculator">4 / (5/13)</gadget>
<output>52/5 = around 10.4</output>

<result>52/5 = around 10.4</result>