can someone help with the following assignment. Using the MARIE computer assembly language, write a program that computes the following expression: $\backslash (\backslash$mathrm$\{$z$\}\backslash$leftarrow$\backslash$left$(\backslash$mathrm$\{$a$\}^\{*\}\backslash$mathrm$\{$~b$\}\backslash$right$)*(\backslash$mathrm$\{$c$\}*\backslash$mathrm$\{$~d$\})^\{*\}\backslash )$ e$.$ The computer will read in the input values $\backslash ($ a$,$ b$,$ c$,$ d $\backslash ),$ and e from the keyboard, and the final result $\backslash (($z$)\backslash )$ has to be displayed. In addition, every time an input value is read in$,$ it must be validated by checking that the input is a positive number. If it is positive display the number on the screen; otherwise display zero and end the program. Each time a multiplication of two numbers is needed, it has to be done using a multiplication subroutine. Remember that the MARIE instruction set does not have an instruction to execute multiplication, you must create a subroutine $($function$)$ that multiplies two numbers and call it each time you need it$.$ The program must be tested in the MARIE simulator.