Plz solve all its a humbel request Problem $7\mathrm{.}1$: Write an assembly program that swaps the high and low nibbles of a byte stored in BL using shift$/$rotate operations.

Problem $7\mathrm{.}2$: Create a program that multiplies the AX register by $3$ using shift$/$rotate operations only.

Problem $7\mathrm{.}3$: Write an assembly program to divide the number by $2$ using shift$/$rotate operations only.

Problem $7\mathrm{.}4$: Create a program in $8086$ assembly to perform a reverse bit order on the AL register.