Master Wang's apprentice processes parts in the workshop, 67 parts are processed every day, and he has a day off in December. How many parts did he process in total in December?
王师傅的徒弟在车间加工零件，每天加工67个零件，12月份休息了一天，他十二月份共加工零件多少个？
<gadget id="calculator">31 - 1</gadget>
<output>30</output>

<gadget id="calculator">67 * 30</gadget>
<output>2_010</output>

<result>2_010</result>