After the equipment of Hongxing Machinery Factory was updated, 2,400 parts were produced every day, which was 400 more than the original plan. How much is the increase in production compared to the original plan?
红星机器厂设备更新后，每天生产零件2400个，比原计划多生产400个．比原计划增产百分之几？
<gadget id="calculator">2_400 - 400</gadget>
<output>2_000</output>

<gadget id="calculator">400 / 2_000</gadget>
<output>1/5 = around 0.2</output>

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

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

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