One wire is 47 meters long and the other is 32 meters long. After the two wires use up the same length, the ratio of the remaining length of one wire to the remaining length of the other is 4:1. How many meters are used for each of the two wires?
一根电线长47米，另一根电线长32米．两根电线用去同样的长度后，一根电线剩下和另一根剩下的长度比是4：1．两根电线各用去多少米？
<gadget id="calculator">4 * 32</gadget>
<output>128</output>

<gadget id="calculator">128 - 47</gadget>
<output>81</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">81 / 3</gadget>
<output>27</output>

<result>27</result>