A toy factory planned to produce 4,000 panda toys in one month, but the plan was completed in the first half of the month (5/8), and the second half of the month was as much as the first half. How many more panda toys are produced this month than originally planned?
一家玩具厂计划一个月内生产熊猫玩具4000个，结果上半月完成了计划的(5/8)，下半月完成与上半月同样多．这个月生产的熊猫玩具比原计划多多少个？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(5/8) * 2</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">4_000 * (1/4)</gadget>
<output>1_000</output>

<result>1_000</result>