If the length, breadth and height of a box are 5 cm, 6 cm and 8 cm respectively, then the volume of the box is .
The internal length, breadth and height of a rectangular box A is20 cm, 18 cm and 15 cm respectively and that of the box B are 18cm, 12cm and 5 cm respectively. The volume of box A is how many times that of B?