Buying 2 bottles of liquor and 12 bottles of beer costs 84 yuan. It is known that the price of a bottle of liquor is equal to that of 8 bottles of beer. How much is the total cost of a bottle of liquor and a bottle of beer?
买2瓶白酒和12瓶啤酒共用84元，已知一瓶白酒与8瓶啤酒的价钱相等，那么一瓶白酒和一瓶啤酒共需多少元．
<gadget id="calculator">2 * 8</gadget>
<output>16</output>

<gadget id="calculator">16 + 12</gadget>
<output>28</output>

<gadget id="calculator">84 / 28</gadget>
<output>3</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">2 * 8 * (3/2)</gadget>
<output>24</output>

<gadget id="calculator">24 + 3</gadget>
<output>27</output>

<result>27</result>