In order to green the campus, 9 students voluntarily helped the school plant 40.5 square meters of turf on Sunday. How many square meters of turf does each student plant on average?
为了绿化校园，有9名同学星期日义务帮学校植草皮40.5平方米，平均每个同学植草皮多少平方米？
<gadget id="calculator">40.5 / 9</gadget>
<output>4.5</output>

<result>4.5</result>