Chaoyang Primary School plans to plant 600 trees, and 350 have already been planted.
朝阳小学计划植树600棵，已经栽了350棵，还差几分之几没栽？
<gadget id="calculator">600 - 350</gadget>
<output>250</output>

<gadget id="calculator">250 / 600</gadget>
<output>5/12 = around 0.416667</output>

<result>5/12 = around 0.416667</result>