The school plans to plant 450 trees, but 300 have been planted, how many have been planted?
学校计划植树450课，已经植了300棵，已经植了几分之几？
<gadget id="calculator">300 / 450</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>