The school has newly imported 960 student desks, and 360 have already been shipped, and the rest will be shipped in 4 times. How many desks are shipped on average each time?
学校新进960张学生课桌，已经运来了360张，剩下的分4次运完，平均每次运多少张课桌？
<gadget id="calculator">960 - 360</gadget>
<output>600</output>

<gadget id="calculator">600 / 4</gadget>
<output>150</output>

<result>150</result>