Sixth grade boys planted 120 trees, girls planted 80 trees, what percentage of the total number of trees planted by girls?
六年级男生植树120棵，女生植树80棵，女生植树数是总植树数的百分之几？
<gadget id="calculator">120 + 80</gadget>
<output>200</output>

<gadget id="calculator">80 / 200</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>