A water delivery worker has to deliver 10 buckets of water every day. How many buckets of water can he deliver in total in the second quarter of the year (April, May, and June)?
一位送水工人每天要送10桶水，一年中第二季度(四月、五月、六月)他一共能送多少桶水？
<gadget id="calculator">30 + 31 + 30</gadget>
<output>91</output>

<gadget id="calculator">10 * 91</gadget>
<output>910</output>

<result>910</result>