There are two fuel tanks, A and B. Measured from the inside, the length of A fuel tank is 6 decimeters, the width is 4 decimeters, and the height is 5 decimeters; the length of B fuel tank is 4 decimeters, the width is 4 decimeters, and the height is 6 decimeters. rice. Now pour a part of oil from the full tank A into the empty tank B so that the oil in the two tanks is the same height. What is the height of the oil in the two tanks in decimeters?
有甲、乙两个油箱，从里面量，甲油箱长是6分米，宽是4分米，高是5分米；乙油箱长是4分米，宽是4分米，高是6分米．现把装满油的甲油箱往空的乙油箱中倒入一部分油，使两油箱的油一样高．这两个油箱里的油高是多少分米．
<gadget id="calculator">6 * 4 * 5</gadget>
<output>120</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<gadget id="calculator">24 + 16</gadget>
<output>40</output>

<gadget id="calculator">120 / 40</gadget>
<output>3</output>

<result>3</result>