$8\mathrm{.}3$ LAB: Arithmetic expression $-$ add$/$sub$/$mul Given the mapping of registers to variables below, write a program to implement the following express

Z$=($A$+$B$)\backslash$times $($C$-$D$)$

Ex: If the values of $ t $0,$ S t $1,$ S t $2,$ and $$3$ are initialized in the simulator as:the result is stored in St$4$ Note Use the $\text{'}+$ button under the Registers display to initialize register values

$8\mathrm{.}2$ LAB: Arithmetic expression $-$ add$/$sub

Given the mapping of registers to variables below, write a program to implement the following expression:

$Z=A+B+C-D$

$\backslash$table$[[$Registers$,$Variables$],[$St$0,$A$],[$St$1,$B$],[$St$2,$C$],[$St$3,D$