The opening ceremony of the first sports meeting in our county was held in the stadium in November, and the spectators sat in the stands and Pingba. There are 250 people in each row in the stands. Sit in 40 rows. There were 8,200 people sitting on Pingba, how many people watched the opening ceremony?
我县第一届运动会开幕式于11月在体育场举行，观看的人员坐在看台和平坝．看台上每排有250人．坐了40排．平坝上坐了8200人，一共有多少人观看开幕式？
<gadget id="calculator">250 * 40</gadget>
<output>10_000</output>

<gadget id="calculator">10_000 + 8_200</gadget>
<output>18_200</output>

<result>18_200</result>