The movie theater originally had 35 rows of seats, with 28 seats in each row. After the expansion, it increased to 42 rows, with 6 seats in each row. How many seats does the movie theater have after the extension?
电影院原来共有35排座位，每排28个，扩建后增加到42排，每排增加了6个座位，扩建后这个电影院一共有多少个座位？
<gadget id="calculator">28 + 6</gadget>
<output>34</output>

<gadget id="calculator">42 * 34</gadget>
<output>1_428</output>

<result>1_428</result>