Mingming's family picked 250 kilograms of strawberries, and Xiaohua's family picked 300 kilograms of strawberries. 2 kilograms of strawberries are packed in a box. How many boxes of strawberries can they hold together?
明明家摘了250千克的草莓，小花家摘了300千克的草莓，2千克草莓装一盒，他们两家的草莓一共能装多少盒？
<gadget id="calculator">250 + 300</gadget>
<output>550</output>

<gadget id="calculator">550 / 2</gadget>
<output>275</output>

<result>275</result>