What does this program do? What is the RESULT value after running this code?

Question 2. What does this program do? What is the RESULT value after running this code? .ORIG X3000 LD R2, ZERO LD RO, MO LD RI, MI LOOP BRZ DONE ADD R2, R2, RO ADD RI, RI, -1 BR LOOP DONE ST R2, RESULT HALT RESULT FILL X0000 ZERO .FILL x0000 MO .FILL X0004 MI .FILL x0005 .END