A box of cylindrical beverages, 4 in each row, a total of 6 rows, the diameter of the bottom of this cylindrical beverage is 6.5cm, and the height is 12cm. What is the minimum cubic decimeter volume of this carton?
一箱圆柱形的饮料，每排摆4个，共6排，这种圆柱形的饮料的底面直径是6.5cm，高是12cm．这个纸箱的体积至少是多少立方分米？
<gadget id="calculator">6.5 * 6</gadget>
<output>39</output>

<gadget id="calculator">6.5 * 4</gadget>
<output>26</output>

<gadget id="calculator">12 / 1_000</gadget>
<output>3/250 = around 0.012</output>

<gadget id="calculator">39 * 26 * (3/250)</gadget>
<output>1_521/125 = around 12.168</output>

<result>1_521/125 = around 12.168</result>