Please explain how do we get the answer in the circle: D= $2645

Problem-4 (40 Points) ORG $2600 VAL1 RMB 2 VAL2 RMB DAT1 FCB $22, $4D, $9F DAT2 FDB $130, $5C, $8F RAD1EQU $31 RAD2 EQU $41 Execute the following instructions based on the information shown above. Write answers to the next of each instruction. Instructions Results Instructions Results LDX #VAL1 X = $2600 LDAA #RAD2 A = $41 LDX #VAL2 X = $2602 ADDA DAT2 A = $42 LDX #DAT1 X = $2604 LDD #RAD 1 D = $0031 LDAA 2,X A = $9F ADDD DAT1 D = $227E LDX #DAT2 X = $2607 LDD #RAD2 D = $0041 LDAA 3, A = $5C ADDD #DAT1 D = $2645 LDAA #RAD1 A = $31 ADDA DAT1 A = $53 Problem-4 (40 Points) ORG $2600 VAL1 RMB 2 VAL2 RMB DAT1 FCB $22, $4D, $9F DAT2 FDB $130, $5C, $8F RAD1EQU $31 RAD2 EQU $41 Execute the following instructions based on the information shown above. Write answers to the next of each instruction. Instructions Results Instructions Results LDX #VAL1 X = $2600 LDAA #RAD2 A = $41 LDX #VAL2 X = $2602 ADDA DAT2 A = $42 LDX #DAT1 X = $2604 LDD #RAD 1 D = $0031 LDAA 2,X A = $9F ADDD DAT1 D = $227E LDX #DAT2 X = $2607 LDD #RAD2 D = $0041 LDAA 3, A = $5C ADDD #DAT1 D = $2645 LDAA #RAD1 A = $31 ADDA DAT1 A = $53