$2.$ Convert the following numbers.a$.-19\mathrm{.}125$ from decimal to lEEE $754$ single precision format $($Sign bit: $1$ bit; Exponent width: $8$ bits;Significand precision: $23$ bits$).$ Give your final answer in the binary format. $(4$ points$)$b$.0$x$3$F$300000$ from IEEE single precision format to decimal. Give your final answer as a decimal number $($base $10).(5$ points$)56$x$99112|16$dW ailib$99258$ Seb noilaurani zit $29$ch J$6$rW$9?7$ger $900.$mi yosdong anocs W$3.$ Please show the steps to calculate the multiplication between two signed $4-$bit numbers: $1001$ and $0101.(6$ points$)$