cylindrical tin oil barrel is filled with half a barrel of oil, and the oil in the barrel is poured out (2/5), and there are 48 liters left. The bottom area of the oil barrel is 10 square decimeters, what is the height of the oil barrel?
一个圆柱形铁皮油桶，装了半桶油，把桶里的油倒出(2/5)，还剩48升．油桶的底面积是10平方分米，油桶的高多少？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">48 / (3/5)</gadget>
<output>80</output>

<gadget id="calculator">80 * 2</gadget>
<output>160</output>

<gadget id="calculator">160 / 10</gadget>
<output>16</output>

<result>16</result>