A group of children bought 27 bottles of soda, and stipulated that 3 empty bottles can be exchanged for a bottle of soda. How many bottles of soda did they drink in total?
一群小朋友买了27瓶汽水，规定用3个空瓶可以换一瓶汽水，他们一共喝了多少瓶汽水．
<gadget id="calculator">27 / 3</gadget>
<output>9</output>

<gadget id="calculator">27 / 3 / 3</gadget>
<output>3</output>

<gadget id="calculator">27 / 3 / 3 / 3</gadget>
<output>1</output>

<gadget id="calculator">27 + 9 + 3 + 1</gadget>
<output>40</output>

<result>40</result>