There is an activity in a certain area: 3 empty bottles can be exchanged for a bottle of water. Xiao Ming now has 10 empty bottles, so how many bottles of water can Xiao Ming drink.
某个地区有一个活动：用3个空瓶可以换一瓶水，小明现在有10个空瓶，那么小明可以喝到多少瓶水．
<gadget id="calculator">3 + 1 + 1</gadget>
<output>5</output>

<result>5</result>