Xiao Ming planned to do 50 math problems on Sunday, but actually did 80. How much more did you actually do than planned?
星期日小明计划做50道口算题，实际做了80道．实际比计划多做百分之几？
<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<gadget id="calculator">30 / 50</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>