The two masters and apprentices jointly produced 432 parts and completed it in 4 days. The master produces 60 per day, how many per day does the apprentice produce? (Solution of column equation)
师徒二人共同生产432个零件，4天完成．师傅每天生产60个，徒弟每天生产多少个？(列方程解)
<gadget id="calculator">60 * 4</gadget>
<output>240</output>

<gadget id="calculator">432 - 240</gadget>
<output>192</output>

<gadget id="calculator">192 / 4</gadget>
<output>48</output>

<result>48</result>