Mom went to the supermarket and bought 6 bottles of rice wine and 3 bottles of coke, and the total cost was 123 yuan. It is known that each bottle of cola is 5 yuan, how much is each bottle of rice wine?
妈妈去超市买了6瓶黄酒和3瓶可乐，共用去123元，已知可乐每瓶5元，黄酒每瓶多少元？
<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<gadget id="calculator">123 - 15</gadget>
<output>108</output>

<gadget id="calculator">108 / 6</gadget>
<output>18</output>

<result>18</result>