The Experimental Primary School planned to enroll 200 first-grade students this semester, but actually enrolled 220 students. What percentage exceeded the plan?
实验小学本学期计划招收一年级新生200人，实际招收了220人，超过计划的百分之几？
<gadget id="calculator">220 - 200</gadget>
<output>20</output>

<gadget id="calculator">20 / 200</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>