can someone help me fix my code? ORG $100$

Input $/$ Read a

Skipcond $800$

Jump Error

Output

Store A

Input $/$ Read b

Skipcond $800$

Jump Error

Output

Store B

Input $/$ Read c

Skipcond $800$

Jump Error

Output

Store C

Input $/$ Read d

Skipcond $800$

Jump Error

Output

Store D

Input $/$ Read e

Skipcond $800$

Jump Error

Output

Store E

Load A

Store Operand$1$

Load B

Store Operand$2$

Load AddrMultiplyReturn$1/$ Prepare for the return address from Multiply

Store MultiplyReturn

JUMP Multiply

AddrMultiplyReturn$1,$ HEX $0/$ Placeholder for the return address

Store TempResult$1$

Load C

Store Operand$1$

Load D

Store Operand$2$

Load AddrMultiplyReturn$2$

Store MultiplyReturn

JUMP Multiply

AddrMultiplyReturn$2,$ HEX $0$

Store TempResult$2$

Load TempResult$1$

Store Operand$1$

Load TempResult$2$

Store Operand$2$

Load AddrMultiplyReturn$3$

Store MultiplyReturn

JUMP Multiply

AddrMultiplyReturn$3,$ HEX $0$

Store TempResult$3$

Load TempResult$3$

Store Operand$1$

Load E

Store Operand$2$

Load AddrMultiplyReturn$4$

Store MultiplyReturn

JUMP Multiply

AddrMultiplyReturn$4,$ HEX $0$

Output $/$ Display the final result

Halt

Multiply, Clear

Store Result

Load Operand$1$

Skipcond $400$

Jump Return

Load Operand$2$

Store Counter

MultiplyLoop, Load Result

Add Operand$1$

Store Result

Load Counter

Subt One

Store Counter

Skipcond $400$

Jump MultiplyLoop

Return, JUMP I MultiplyReturn

Error, Load Zero

Output

Halt

A$,$ DEC $0$

B$,$ DEC $0$

C$,$ DEC $0$

D$,$ DEC $0$

E$,$ DEC $0$

Operand$1,$ DEC $0$

Operand$2,$ DEC $0$

Counter, DEC $0$

Result, DEC $0$

TempResult$1,$ DEC $0$

TempResult$2,$ DEC $0$

TempResult$3,$ DEC $0$

One, DEC $1$

Zero, DEC $0$

MultiplyReturn, DEC $0$

this is the project on working on: Using the MARIE computer assembly language, write a program that computes the following expression:

z $($a $*$ b$)*($c $*$ d$)*$ e$.$ The computer will read in the input values a$,$ b$,$ c$,$ d$,$ and e from the keyboard, and the final result $($z$)$ 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. this is the error i get. $13$E A$000|$ Multiply CLEAR

$13$F $2159|$ STORE Result

$1401156|$ LOAD Operand$1$

$1418400|$ SKIPCOND $400$

$142914$D $|$ JUMP Return

$1431157|$ LOAD Operand$2$

$1442158|$ STORE Counter

$1451159|$ MultiplyLoop LOAD Result

$1463156|$ ADD Operand$1$

$1472159|$ STORE Result

$1481158|$ LOAD Counter

$149415$D $|$ SUBT One

$14$A $2158|$ STORE Counter

$14$B $8400|$ SKIPCOND $400$

$14$C $9145|$ JUMP MultiplyLoop

$14$D $9???|$ Return JUMP I

$****$ Operand undefined.