Can you please fix this ARM V8 code and make it work for this assignment? Please take a screenshot afterward. Thank you

@ num_in.s @ get user input ready to do maths @ registers @ r1 - pointer to the buffer @ r2 - used to load digits @ r3 - counts digits @ r4 - multiplier @ r6 - counter @ r0 - return value .section .bss .comm buffer, 48 @ reserve 48 byte buffer .section .data msg: .ascii "Enter a number: " msgLen = . - msg .section .text .globl _start _start: mov r0, $1 @ print program's opening message ldr r1, =msg ldr r2, =msgLen mov r7, $4 svc $0 @ get input mov r7, $3 @ 3 is the "read" syscall mov r0, $1 ldr r1, =buffer mov r2, $0x30 svc $0 @ prepare to convert ascii to number ldrb r2, [r1] @ load first char mov r3, $0 @ initialize r3 as a counter pushDigits: stmfd sp!, {r2} @ push digit onto stack add r3, r3, $1 @ increment counter ldrb r2, [r1, #1]! @ load next digit (use writeback) cmp r2, $0xA @ check for ascii code 10 beq convDigits @ jump to conversion section bne pushDigits @ or carry on pushing convDigits: mov r4, $1 @ initialize multiplier to 1 mov r0, $0 @ initialize number mov r6, $0 @ initialize counter jumpBack: ldmfd sp!, {r2} @ pop a digit cmp r2, $0x30 @ is it a digit? blt error cmp r2, $0x39 @ sure? bgt error sub r2, r2, $0x30 @ take away 48, to get the digit value mul r2, r4, r2 @ multiply it by r4 add r0, r0, r2 @ add to r0 add r6, r6, $1 @ increment counter cmp r6, r3 @ check to see if done beq exit mov r5, r4, lsl $3 @ do multiply by ten using adds and shifts add r4, r5, r4, lsl $1 @ x * 8 + x * 2 = x * 10 bal jumpBack @ Least significant byte available via "echo $?" error: mov r0, $-1 bal exit exit: mov r7, $1 @ exit syscall svc $0 @ wake kernel .end 

In this assignment, you will program a simple calculator for the Raspbian OS using ARM assembly. Your program, at a minimum, will consist of the following procedure calls SUM: Adds registers R1 and R2, returning result in register RO DIFFERENCE: Subtracts register R2 from R1, returning result in register RO PRODUCT: Multiplies registers R1 and R2, returning the result in register RO MAX: Compares registers R1 and R2, returning the maximum of the two values in RO Your main function will contain a loop that continuously checks for keyboard input in the following pattern KOPERAND 1>KENTER> KOPERAND 2>KENTER> Where can be any of the four characters+,-,,M. Once the 3 lines of input are acquired, the operands should be loaded into the proper registers and the procedure corresponding to should be called. The procedure should return the result in register R0, and the main function should print the value to the console and skip to a new line You may ignore overflows, underflows, and improperly formatted input. All input test cases will consist of positive numbers only. Below are some example use case:s 100 50 15 20