The factory completed 27% of the full-month plan in the first half of the year, 30% in the middle of the month, and how much of the full-month plan was completed in the second half of the month.
工厂上旬完成了全月计划的27%，中旬完成了30%，下旬完成全月计划的多少．
<gadget id="calculator">27 / 100</gadget>
<output>27/100 = around 0.27</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (27/100) - (3/10)</gadget>
<output>43/100 = around 0.43</output>

<result>43/100 = around 0.43</result>