The master and apprentice make a batch of parts. The master does 12 per hour, the apprentice does 10 per hour, and the two work together for 8 hours to complete. How many parts are there in total?
师徒两人做一批零件．师傅每小时做12个，徒弟每小时做10个，两人合做8小时完成．这批零件一共有多少个？
<gadget id="calculator">12 + 10</gadget>
<output>22</output>

<gadget id="calculator">22 * 8</gadget>
<output>176</output>

<result>176</result>