The fruit shop shipped 400kg of oranges. After filling 33 boxes, there are 4kg left. How many kilograms of oranges per box on average?
水果店运来橘子400kg，装满33箱后，还剩4kg，平均每箱橘子多少千克？
<gadget id="calculator">400 - 4</gadget>
<output>396</output>

<gadget id="calculator">396 / 33</gadget>
<output>12</output>

<result>12</result>