The school bought 73 boxes of chalk, and after giving 10 boxes to Class 2, Class 1, the rest will be distributed to 7 classes. How many boxes of chalk will each class get on average?
学校买来73盒粉笔，拿给二1班10盒后，剩下的要分给7个班，平均每个班分到多少盒粉笔？
<gadget id="calculator">73 - 10</gadget>
<output>63</output>

<gadget id="calculator">63 / 7</gadget>
<output>9</output>

<result>9</result>