The school held a broadcasting exercise competition. At the beginning, there were 4 rows with 5 people in each row. In fact, 2 more rows were added. How many people are there in total now?
学校举行广播操比赛，开始要排成4行，每行5人，实际又增加了2行，现在一共有多少人？
<gadget id="calculator">4 + 2</gadget>
<output>6</output>

<gadget id="calculator">6 * 5</gadget>
<output>30</output>

<result>30</result>