Please explain @Program A (each line), the result already given

Determine the content of memory location named RESULT after execution of each of the following codes @Program A @ Program B TEXT TEXT LDR R1, NUM LDR R2, N LDR R2,[R2] LDR RO, 58 LDR R1, 68 ADD R1,R1,RO LDR RO,-80 ADD R1,R1,RO LDR R0,?RESULT STR R1,[RO] S: B S MOV R0, #0 LOOP: LDR R3, [R1], #4 CMP R3, #0 ADDMI R0, R0, #1 SUBS R2, R2, #1 BNE LOOP DATA STR RO, RESULT RESULT: .SKIP 4 END S: B S DATA N: WORD 6 NUM:.WORD -2,3,5.-6,1,7 RESULT: .SKIP 4 END Program A) Program B) RESULT- 2 RESULT- 46 Determine the content of memory location named RESULT after execution of each of the following codes @Program A @ Program B TEXT TEXT LDR R1, NUM LDR R2, N LDR R2,[R2] LDR RO, 58 LDR R1, 68 ADD R1,R1,RO LDR RO,-80 ADD R1,R1,RO LDR R0,?RESULT STR R1,[RO] S: B S MOV R0, #0 LOOP: LDR R3, [R1], #4 CMP R3, #0 ADDMI R0, R0, #1 SUBS R2, R2, #1 BNE LOOP DATA STR RO, RESULT RESULT: .SKIP 4 END S: B S DATA N: WORD 6 NUM:.WORD -2,3,5.-6,1,7 RESULT: .SKIP 4 END Program A) Program B) RESULT- 2 RESULT- 46