There are 9 chicken cages in the chicken farm, and each chicken cage has 6 floors. A total of 864 chickens are raised. How many chickens are raised on each floor?
养鸡场有9个鸡笼，每个鸡笼有6层，共养了864只鸡，平均每层养鸡多少只？
<gadget id="calculator">9 * 6</gadget>
<output>54</output>

<gadget id="calculator">864 / 54</gadget>
<output>16</output>

<result>16</result>