$2\mathrm{.}9$ Make the following conversions:

a$.10011\mathrm{.}101$B to decimal, hexadecimal, and octal

b$.$

$2$A$1$F$.$Bh to binary, octal, and decimal

c$.275\mathrm{.}32Q$ to binary, hexadecimal, and decimal

d$.1327\mathrm{.}76$ to binary $($up to $6$ binary fractional digits$).$