Flour mills completed (2/3) of the annual tasks in the first half of last year. In the second half of the year, they could produce 1,500 tons more than 300 tons. How many tons of flour did they plan to produce last year?
面粉厂去年上半年完成全年任务的(2/3)，下半年再生产1500吨就可以超产300吨，去年计划生产面粉多少吨？
<gadget id="calculator">1_500 - 300</gadget>
<output>1_200</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1_200 / (1/3)</gadget>
<output>3_600</output>

<result>3_600</result>