Write a code in Matlab:

The intensity of a pixel with 255 representing white, 0 representing black, and numbers in between representing shades of gray.

m= 492-by-740 matrix

Replace all elements in m that are

greater than or equal to: 0 32 64 96 128 160 192 224

and less than: 32 64 96 128 160 192 224 256

with the number: 0 32 64 96 128 160 192 224