A workshop needs to process 1,200 parts, and it takes 3 days to process (1/10) of the total number. According to this calculation, how many days will it take to complete this batch of parts.
某车间要加工1200个零件，3天加工总数的(1/10)，照这样计算，完成这批零件还要多少天．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) / 3</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">1 / (1/30)</gadget>
<output>30</output>

<gadget id="calculator">30 - 3</gadget>
<output>27</output>

<result>27</result>