Xiaofang made 189 lucky stars and gave them to the children in the children's village. Every 9 stars are packed in a bag, and every 7 bags are packed in a box. How many boxes can be packed in total?
小芳做了189颗幸运星送给儿童村的孩子，每9颗装一袋，每7袋装一盒，一共可以装多少盒？
<gadget id="calculator">189 / 9 / 7</gadget>
<output>3</output>

<result>3</result>