The chemical fertilizer factory planned to produce 5,000 tons of fertilizer in September, but actually produced 4,000 tons in half a month. Based on this calculation, how many percent of the plan can be completed in the whole month?
化肥厂九月份计划生产化肥5000吨，实际上半月生产了4000吨，照这样计算，全月能完成计划的百分之几？
<gadget id="calculator">4_000 + 4_000</gadget>
<output>8_000</output>

<gadget id="calculator">8_000 / 5_000</gadget>
<output>8/5 = around 1.6</output>

<result>8/5 = around 1.6</result>