The East China Sea Theater originally had 30 rows of seats, with 34 seats in each row. After the expansion, 6 rows were added, and each row added 4 seats. How many more people can be seated after the expansion than before?
东海影剧院原有座位30排，每排34座．扩建后增加了6排，每排增加了4座．扩建后比原来可多坐多少人？
<gadget id="calculator">34 + 4</gadget>
<output>38</output>

<gadget id="calculator">30 + 6</gadget>
<output>36</output>

<gadget id="calculator">38 * 36</gadget>
<output>1_368</output>

<gadget id="calculator">34 * 30</gadget>
<output>1_020</output>

<gadget id="calculator">1_368 - 1_020</gadget>
<output>348</output>

<result>348</result>