Ning Ning and Ding Ding paid the same amount of money to buy flowers, but Ning Ning got 12 and Ding Ding got 16, so Ning Ning had to give Ding Ding 20 yuan, how much is each flower?
宁宁和丁丁出同样多的钱买鲜花，结果宁宁拿了12支，丁丁拿了16支，这样宁宁就要给丁丁20元，每支鲜花多少元？
<gadget id="calculator">16 + 12</gadget>
<output>28</output>

<gadget id="calculator">28 / 2</gadget>
<output>14</output>

<gadget id="calculator">16 - 14</gadget>
<output>2</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<result>10</result>