Liu Hui made 18 flowers, Gao Hua made 24 flowers, and Chen Yang made 15 flowers. How many flowers did they make on average?
刘慧做了18朵花，高华做了24朵花，陈阳做了15朵花，他们平均每人做了多少朵花？
<gadget id="calculator">18 + 24 + 15</gadget>
<output>57</output>

<gadget id="calculator">57 / 3</gadget>
<output>19</output>

<result>19</result>