The bottom areas of two cuboid water tanks, A and B, are 200 square decimeters and 100 square decimeters respectively. There is 4,800 liters of water in the A water tank, and the B water tank is empty. Now pour some of the water in the A water tank into the B water tank. Make the water surface heights of the two water tanks equal, how many decimeters are the water surface heights at this time?
甲、乙两个长方体水箱的底面积分别是200平方分米和100平方分米，甲水箱中有4800升的水，乙水箱是空的，现在将甲水箱中的一部分水倒入乙水箱，使两个水箱的水面高度相等，这时水面高多少分米？
<gadget id="calculator">200 + 100</gadget>
<output>300</output>

<gadget id="calculator">4_800 / 300</gadget>
<output>16</output>

<result>16</result>