A factory planned to produce 1,820 machine parts in the first quarter, but actually produced 2,320. What percentage is the increase in production?
某工厂计划第一季度生产机器零件1820个，实际生产了2320个，增产几分之几？
<gadget id="calculator">2_320 - 1_820</gadget>
<output>500</output>

<gadget id="calculator">500 / 1_820</gadget>
<output>25/91 = around 0.274725</output>

<result>25/91 = around 0.274725</result>