Hongxing Primary School carried out environmental protection activities. Xiaoguang started collecting used batteries on May 8, 2008. If he collects 5 batteries a day on average, how many used batteries can he collect in total by July 2?
红星小学开展环保活动，小光从2008年5月8日开始收集废旧电池，如果他平均每天收集5个，到7月2日止，他一共能收集多少个废旧电池？
<gadget id="calculator">24 + 30 + 2</gadget>
<output>56</output>

<gadget id="calculator">5 * 56</gadget>
<output>280</output>

<result>280</result>