A car parking space covers an area of about 16 square meters, and a classroom can park about 4 cars. There are 3.2 million cars in a city, please do the math, how many classrooms are needed to park these cars?
一辆汽车停车位的占地面积大约是16平方米，一间教室大约能停4辆汽车．一个城市有320万辆汽车，请你算一算，大约要多少间教室那么大的地方才能够停这些汽车？
<gadget id="calculator">320 * 10_000</gadget>
<output>3_200_000</output>

<gadget id="calculator">3_200_000 / 4</gadget>
<output>800_000</output>

<result>800_000</result>