Master Wang processed 198 parts, from May 25th to June 2nd, how many parts was processed by Master Wang on average every day?
王师傅加工198个零件，从5月25日开始到6月2日完工，王师傅平均每天加工多少个零件．
<gadget id="calculator">31 - 25</gadget>
<output>6</output>

<gadget id="calculator">6 + 1 + 2</gadget>
<output>9</output>

<gadget id="calculator">198 / 9</gadget>
<output>22</output>

<result>22</result>