All the third grade students of Xingguang Primary School took 6 tourist buses to go on an outing. There are 45 students in each of the first 5 cars, and 42 students in the sixth car. How many students in the third grade go to the field trip?
星光小学三年级全体同学分乘6辆旅游车去郊游．前5辆车各坐了45个同学，第6辆车坐42个同学．三年级有多少同学去参加郊游？
<gadget id="calculator">45 * 5</gadget>
<output>225</output>

<gadget id="calculator">225 + 42</gadget>
<output>267</output>

<result>267</result>