A forest farm needs to plant 2,000 trees, and an average of 350 trees are planted every day in the first 3 days. The rest are required to be planted in 2 days. How many trees should be planted on average per day?
一个林场要栽树2000棵，前3天平均每天栽350棵．其余的要求2天栽完，平均每天要栽多少棵？
<gadget id="calculator">350 * 3</gadget>
<output>1_050</output>

<gadget id="calculator">2_000 - 1_050</gadget>
<output>950</output>

<gadget id="calculator">950 / 2</gadget>
<output>475</output>

<result>475</result>