The downstairs of an auditorium has 39 seats in each row, a total of 26 rows, and the upstairs has 200 seats less than the downstairs. How many seats are there in total in this auditorium?
一个礼堂楼下，每排39个座位，一共26排，楼上比楼下少200个座位，这个礼堂共多少个座位？
<gadget id="calculator">39 * 26</gadget>
<output>1_014</output>

<gadget id="calculator">1_014 - 200</gadget>
<output>814</output>

<gadget id="calculator">814 + 1_014</gadget>
<output>1_828</output>

<result>1_828</result>