few friends went to the supermarket to purchase together. In the supermarket, a pack of beef ribs cost 3 yuan, and a bag of sauced beef cost 8 yuan. If each person buys 4 packs of beef gluten and 2 packs of sauced beef, there is still 8 yuan left. If each person buys 2 packs of beef gluten and 3 packs of sauced beef, there will be a shortfall of 4 yuan. May I ask: How many people went to the supermarket together?
几个朋友一起去超市采购，超市里一包牛板筋3元钱，一袋酱牛肉8元钱．如果每人买4包牛板筋、2袋酱牛肉，还能剩下8元钱．如果每人买2包牛板筋、3袋酱牛肉，就会缺少4元钱．请问：一起去超市的共有几人？
<gadget id="calculator">8 + 4</gadget>
<output>12</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">8 * 3</gadget>
<output>24</output>

<gadget id="calculator">6 + 24</gadget>
<output>30</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<gadget id="calculator">12 + 16</gadget>
<output>28</output>

<gadget id="calculator">30 - 28</gadget>
<output>2</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<result>6</result>