Uncle Li raises 320 pigs and 12 times as many cattle as pigs. How many pigs and cattle does Uncle Li have?
李大伯养猪320头，养牛的头数是养猪的12倍，李大伯养猪、牛一共有多少头？
<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<gadget id="calculator">320 * 13</gadget>
<output>4_160</output>

<result>4_160</result>