People’s Cinema’s Type A ticket is 5.5 yuan per person, and Type B ticket is 4.5 yuan per person. These two types of tickets have 400 seats. If all seats are full, how much can you earn per show?
人民电影院甲种票每人5.5元，乙种票每人4.5元，这两种票的座位都是400个，如果坐满座，每场可收入多少元？
<gadget id="calculator">5.5 + 4.5</gadget>
<output>10</output>

<gadget id="calculator">10 * 400</gadget>
<output>4_000</output>

<result>4_000</result>