cylindrical oil barrel has a bottom area of 156 cm2 and a height of 40 cm. Pour the full barrel of oil into a cuboid fuel tank. The fuel tank is still 25% empty. It is known that the bottom area of the fuel tank is 200 cm2. At this time, the distance between the oil surface and the fuel tank mouth how many centimeters?
一个圆柱形油桶，底面积156平方厘米，高40厘米，把满桶油倒入一个长方体油箱中，油箱还空25%，已知油箱底面积是200平方厘米，这时油面距油箱口多少厘米？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">40 / 200 / (3/4)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">156 * (4/15)</gadget>
<output>208/5 = around 41.6</output>

<gadget id="calculator">(208/5) * (1/4)</gadget>
<output>52/5 = around 10.4</output>

<result>52/5 = around 10.4</result>