Starting from January this year, Red Star Mall has purchased 27kg of liquor every two months and sold 12.6kg of liquor every month. By the end of the year, how much liquor is left in the Red Star Mall?
红星商场今年从一月份起，每两月购进白酒27kg，每月售出白酒12.6kg．到年底，红星商场还剩多少白酒？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">27 * 6</gadget>
<output>162</output>

<gadget id="calculator">12.6 * 12</gadget>
<output>151.2</output>

<gadget id="calculator">162 - 151.2</gadget>
<output>10.8</output>

<result>10.8</result>