If a cube iron block with a side length of 6 decimeters is processed into a cuboid iron block with a length of 12 decimeters and a width of 5 decimeters, how many decimeters is the height of this cuboid iron block?
把一个棱长6分米的正方体的铁块，加工成一个长12分米，宽5分米的长方体铁块，这个长方体铁块高多少分米？
<result>6</result>