The fifth-grade students chartered a car to visit the Memorial Hall of the New Fourth Army. The original plan was to accommodate 30 people in each car, but 16 cars were needed. In fact, 4 cars were used less. How many people did each car take on average?
五年级学生包车去参观新四军纪念馆，原计划每辆车坐30人，则需要16辆车；实际少用了4辆车，平均每辆车坐了多少人？
<gadget id="calculator">16 - 4</gadget>
<output>12</output>

<gadget id="calculator">16 / 12</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">30 * (4/3)</gadget>
<output>40</output>

<result>40</result>