There are two water tanks, A and B. Measured from the inside, the length of A water tank is 12 decimeters, the width is 8 decimeters, and the height is 5 decimeters. The length of B water tank is 8 decimeters, the width is 8 decimeters, and the height is 6 decimeters. Tank A is full of water and tank B is empty, now all the water in tank A is pumped into tank B. How many decimeters is the water level of tank B?
有甲、乙两个水箱，从里面测量，甲水箱长12分米，宽8分米，高5分米，乙水箱长8分米，宽8分米，高6分米．甲水箱装满水，乙水箱空着，现将甲水箱里水全部抽到乙水箱中．求乙水箱的水面高多少分米？
<result>6</result>