In the greening campus activities, the boys in Class 1 of the Sixth Class planted 50 trees, and the girls planted 40 trees. Girls planted fewer trees than boys.
在绿化校园活动中，六1班男生植树50棵，女生植树40棵，女生比男生少植树多少．
<gadget id="calculator">50 - 40</gadget>
<output>10</output>

<gadget id="calculator">10 / 50</gadget>
<output>1/5 = around 0.2</output>

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