A bottle of milk is 200ml, and Xiao Ming needs about 20 mouthfuls to finish it. How many milliliters does Xiaoming drink on average in one mouthful?
一瓶牛奶200毫升，小明需用大约20口能把它喝完，小明平均一口大约喝多少毫升？
<gadget id="calculator">200 / 20</gadget>
<output>10</output>

<result>10</result>