Some tree planting tasks were assigned to the school this spring. Planting 200 trees a day can complete the task in 6 days. Now it takes 4 days to complete the task. How many more trees are actually planted per day than originally planned?
今春分配给学校一些植树任务，每天栽200棵6天可以完成任务，现在需要4天完成任务，实际每天比原计划多栽多少棵？
<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">200 * (3/2)</gadget>
<output>300</output>

<gadget id="calculator">300 - 200</gadget>
<output>100</output>

<result>100</result>