A fourth-grade classmate went on a spring outing. He originally took a 40-seater bus. It is now changed to a 48-seater passenger car, so that 2 cars are used less than before (every car is full). How many people in the fourth grade go to the spring outing?
四年级同学去春游，原来乘坐的是40座客车．现改为48座的客车，这样就比原来少用2辆车(每辆车均坐满)．四年级有多少人去春游？
<gadget id="calculator">48 - 40</gadget>
<output>8</output>

<gadget id="calculator">2 / 8</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">48 * (1/4)</gadget>
<output>12</output>

<gadget id="calculator">40 * 12</gadget>
<output>480</output>

<result>480</result>