In the school art exhibition, there are 40 watercolor paintings and 50 crayon paintings. How much more are the crayon paintings than the watercolor paintings?
学校美术展览中，有40幅水彩画，50幅蜡笔画，蜡笔画比水彩画多百分之几？
<gadget id="calculator">50 - 40</gadget>
<output>10</output>

<gadget id="calculator">10 / 40</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>