There are 60 seats in the movie theater with ticket A, each ticket is 30 yuan; ticket B has 100 seats, and each ticket is 10 yuan. The box office revenue of this movie was 2300 yuan. What is the minimum number of audience members in this movie theater?
电影院共有甲票座位60个，每票30元；乙票座位100个，每票10元．本场电影票房收入为2300元．本场电影院观众最少有多少人？
<gadget id="calculator">60 * 30</gadget>
<output>1_800</output>

<gadget id="calculator">2_300 - 1_800</gadget>
<output>500</output>

<gadget id="calculator">500 / 10</gadget>
<output>50</output>

<gadget id="calculator">50 + 60</gadget>
<output>110</output>

<result>110</result>