The price of a box of milk is 52 yuan, which is 2 yuan less than three times that of a box of mineral water. How much is a box of mineral water?
一箱牛奶的价钱是52元，比一箱矿泉水的3倍少2元，一箱矿泉水多少元？
<gadget id="calculator">52 + 2</gadget>
<output>54</output>

<gadget id="calculator">54 / 3</gadget>
<output>18</output>

<result>18</result>