The landscaping company planted 24,000 trees last year and 30,000 trees this year. How much more trees will be planted this year than last year?
园林绿化公司去年植树2.4万棵，今年植树3万棵．今年比去年多植树百分之几？
<gadget id="calculator">3 - 2.4</gadget>
<output>0.6</output>

<gadget id="calculator">0.6 / 2.4</gadget>
<output>0.25</output>

<result>0.25</result>