A factory plans to produce a total output value of 5 million yuan, which actually exceeds the plan by 1 million yuan. What percentage is the increase in production compared to the plan?
某厂计划生产总产值500万元，实际超过计划100万元．比计划增产百分之几？
<gadget id="calculator">100 / 500</gadget>
<output>1/5 = around 0.2</output>

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