Assume two decimal numbers $y=-0\mathrm{.}25$ and $z=4\mathrm{.}0.$ Show the value of $y$ and $z$

using the IEEE $754$ floating point single precision format then use this format to show the

steps of calculating the following: $($all numbers should be written in both binary and

hexadecimal$)$

i$.y+y+y+y$

ii$.yz$