Uncle Wang bought a set of audio and a DVD, which cost 1,600 yuan. The price of stereo is 3 times the price of DVD. How much is each set of speakers?
王叔叔买了一套音响和一个DVD，共用去1600元．其中音响的价格是DVD价格的3倍．每套音响多少元？
<gadget id="calculator">3 + 1</gadget>
<output>4</output>

<gadget id="calculator">1_600 / 4</gadget>
<output>400</output>

<gadget id="calculator">400 * 3</gadget>
<output>1_200</output>

<result>1_200</result>