A certain factory planned to complete an output value of 6 million yuan this year, but actually completed an output value of 7.2 million yuan. What percentage did the actual output exceed the plan?
某厂今年计划完成产值600万元，实际完成产值720万元，实际比计划超产了百分之几？
<gadget id="calculator">720 - 600</gadget>
<output>120</output>

<gadget id="calculator">120 / 600</gadget>
<output>1/5 = around 0.2</output>

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