198 students in the third grade went to the cinema to watch a movie. After all of them were seated, there were still 4 rows of empty seats. It is known that there are 45 seats in each row of cinema seats, how many people can be seated in this cinema?
三年级198名同学去电影院看电影，全部入座后还有4排空座位．已知电影院座椅每排有45个座位，这个影院一共可以坐多少人？
<gadget id="calculator">45 * 4</gadget>
<output>180</output>

<gadget id="calculator">198 + 180</gadget>
<output>378</output>

<result>378</result>