How many 1/4 cubes are in a rectangular prism that is 2 1/4 in length 1 foot in width and 1 1/4 in height

A 1/4  cube is 1/4 x 1/4 x 1/4 for a volume of 1/64
A rectangular prism that is 2 1/4 in length 1 foot in width and 1 1/4 in height
l=2 1/4>9/4
w=1
h=1 1/4>5/4

V rectangular prism=9/4*1*5/4=45/16 units3
 1 cube 1/41/64 unit3
  x45/16 unit3
x=(45/16)/(1/64)=180

the answer is

There are 180 (1/4 cubes) in a rectangular prism that is 2 1/4 in length 1 foot in width and 1 1/4 in height