$7\mathrm{.}16($a$)$ Multiply the following two oating$-$point numbers to give a properly normalized result. Assume $4-$bit $2$s complement format. F$151\mathrm{.}011,$ E$150101,$ F$251\mathrm{.}001,$ E$250011($b$)$ Repeat $($a$)$ for F$151\mathrm{.}011,$ E$151011,$ F$250\mathrm{.}110,$ E$251101$