Master Zhang opened a bun shop. He started making buns at 2:00 in the morning and didn’t finish until 5:00 in the morning. He made 672 buns in total. How many buns does Master Zhang make per hour on average?
张师傅开了一个包子铺，早上2：00开始做包子，直到早上5：00才做完，一共做了672个，张师傅平均每小时做多少个包子？
<gadget id="calculator">672 / 3</gadget>
<output>224</output>

<result>224</result>