Master Wang processed 250 parts this month, which is 1/6 less than last month. How many parts were processed last month?
王师傅这个月加工了250个零件，比上个月少加工(1/6)，上个月加工零件多少个？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">250 / (5/6)</gadget>
<output>300</output>

<result>300</result>