A cement factory planned to produce 2,400 tons of cement in November, but actually produced 2,520 tons. What percentage of the plan was actually completed? What percentage increase?
某水泥厂十一月份计划生产水泥2400吨，实际生产2520吨，实际完成了计划的百分之几？增产百分之几？
<gadget id="calculator">2_520 / 2_400</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">(21/20) - 1</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>