Question $2(9\%)$: Convert the following decimal numbers to binary. The precision of the binary numbers should be six digits after the radix point.

$(217{)}_{10}$

$(149\mathrm{.}64{)}_{10}$

$(957\mathrm{.}94{)}_{10}$

Question $3(12\%)$: Convert the following binary numbers to their octal and hexadecimal equivalent values.

$(101011\mathrm{.}1010001{)}_2$

$(101001\mathrm{.}101{)}_2$

Question $4(16\%)$: Convert the following decimal numbers to their octal and hexadecimal equivalent values.

$(1089\mathrm{.}5625{)}_{10}$

$(1981\mathrm{.}28125{)}_{10}$