A factory plans to produce 2,000 parts, but actually exceeds the quota by 400. By what percentage is it overfulfilled?
某工厂计划生产2000个零件，实际超额完成400个．超额完成百分之几？
<gadget id="calculator">400 / 2_000</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>