phalanx performance at the opening ceremony of the Games. A total of 729 students participated, arranged in 9 squares. How many students are there on average per square?
运动会开幕式上进行方阵表演．一共有729名学生参加，排成9个方阵．平均每个方阵有多少名学生？
<gadget id="calculator">729 / 9</gadget>
<output>81</output>

<result>81</result>