Dongdong can cut a paper flower in 5 minutes. How many paper flowers did Dongdong cut from 8:10 am to 8:40 am?
冬冬5分钟能剪一朵纸花，他从上午8：10到上午8：40，冬冬共剪了多少朵纸花？
<gadget id="calculator">40 - 10</gadget>
<output>30</output>

<gadget id="calculator">30 / 5</gadget>
<output>6</output>

<result>6</result>