A cylindrical tin oil barrel is filled with gasoline, and after pouring out (3/5) of the gasoline, there are still 25.12 liters of gasoline left. If the circumference of the inner bottom of this oil barrel is 12.56 decimeters, how many decimeters is the height of the oil barrel?
一个圆柱铁皮油桶内装满汽油，现在倒出汽油的(3/5)后，还剩25.12升汽油．如果这个油桶的内底面周长是12.56分米，油桶的高是多少分米？
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">25.12 / 3.14 / 4 / (2/5)</gadget>
<output>5</output>

<result>5</result>