There were 127 students from the third grade to participate in the autumn outing. The school allocated 3 buses to the third grade. The first and second bus each took 42 people. How many people did the third bus take?
三年级有127人参加秋游，学校分给三年级3辆大客车，第一辆和第二辆各坐了42人，第三辆坐了多少人？
<gadget id="calculator">42 * 2</gadget>
<output>84</output>

<gadget id="calculator">127 - 84</gadget>
<output>43</output>

<result>43</result>