Weiminzhong Pharmacy plans to purchase 1,500 kilograms of Chinese herbal medicines, completed 55% of the plan in the first half of the year, and completed 65% of the plan in the second half of the year. How many kilograms of Chinese herbal medicines have been purchased by Weimin Chinese Medicine Store?
为民中药店计划收购中草药1500千克，上半年完成了计划的55%，下半年完成了计划的65%．为民中药店超额收购中草药多少千克？
<gadget id="calculator">55 / 100</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">(11/20) + (13/20)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(6/5) - 1</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1_500 * (1/5)</gadget>
<output>300</output>

<result>300</result>