A certain city held a "small production" and "small invention" competition, and received 212 "small production" works, 4 less than twice the number of "small invention" works, how many "small invention" works? (column equation solution)
某市举行"小制作"和"小发明"比赛，收到"小制作"作品212件，比"小发明"作品的2倍少4件，"小发明"作品有多少件？(列方程解答)
<gadget id="calculator">212 + 4</gadget>
<output>216</output>

<gadget id="calculator">216 / 2</gadget>
<output>108</output>

<result>108</result>