There are 1,000 seats in a performance hall. A performance sells 150 first-class tickets at a unit price of 200 yuan; 250 second-class tickets at a unit price of 160 yuan; and 400 third-class tickets at a unit price of 125 yuan. What is the average unit price.
演出厅有1000个座位，某场演出售出甲等票150张，单价200元；乙等票250张，单价160元；丙等票400张，单价125元，则本场演出每个座位的平均单价为多少元．
<gadget id="calculator">200 * 150</gadget>
<output>30_000</output>

<gadget id="calculator">160 * 250</gadget>
<output>40_000</output>

<gadget id="calculator">125 * 400</gadget>
<output>50_000</output>

<gadget id="calculator">30_000 + 40_000 + 50_000</gadget>
<output>120_000</output>

<gadget id="calculator">120_000 / 1_000</gadget>
<output>120</output>

<result>120</result>