The cinema originally had 38 rows of seats, with 46 seats in each row. After reconstruction, there are 50 rows of seats, with 46 seats in each row. How many seats have been added after the reconstruction? (answer in two ways)
电影院原有座位38排，每排46个．改建后，有座位50排，每排46个．改建后比原来增加了多少个座位？(用两种方法解答)
<gadget id="calculator">46 * 50</gadget>
<output>2_300</output>

<gadget id="calculator">46 * 38</gadget>
<output>1_748</output>

<gadget id="calculator">2_300 - 1_748</gadget>
<output>552</output>

<result>552</result>