There are 72 students in the fifth grade. Because of a certain activity, they paid a total of 52•5□ yuan, and the number "□" is unclear. The average amount of yuan each person should pay can be calculated.
五年级共有72名学生，因某项活动共交钱52•5□元，数字"□"辨认不清，可以算出平均每人应交多少元．
<gadget id="calculator">52.56 / 72</gadget>
<output>0.73</output>

<result>0.73</result>