The price of each ticket in the theater is 8 yuan. The theater can seat 870 people. The tickets for this theater are all sold out. How much is the box office revenue of this theater?
剧场的每张票价是8元，剧场能坐870人，本场院的票都卖完了，这场院票房收入是多少元．
<gadget id="calculator">8 * 870</gadget>
<output>6_960</output>

<result>6_960</result>