The classroom is 7.5 meters long and 4.5 meters wide, and can seat 45 people. How many square meters does each person occupy on average?
教室长7.5米，宽4.5米，可以坐45人．平均每人占地多少平方米？
<gadget id="calculator">4.5 / 45</gadget>
<output>0.1</output>

<gadget id="calculator">7.5 * 0.1</gadget>
<output>0.75</output>

<result>0.75</result>