A conical oil barrel, the inner bottom area of the barrel is 9.6 square decimeters, and the height is 5 decimeters. All the oil in the full barrel is poured into a cuboid oil tank. After pouring, the oil tank is still empty (1/6), It is known that the bottom area of the fuel tank is 4 square decimeters, what is the height of the empty part of the fuel tank in centimeters?
一个圆锥形油桶，桶内底面积是9.6平方分米，高是5分米，把满桶的油全部都倒进一个长方体的油箱内，倒进后油箱还空着(1/6)，已知油箱的底面积是4平方分米，油箱的空余部分的高是多少厘米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(1/3) / 4 / (5/6)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">9.6 * 5 * (1/10)</gadget>
<output>4.8</output>

<gadget id="calculator">4.8 * (1/6)</gadget>
<output>0.8</output>

<result>0.8</result>