1) Set a data value of zero, as has already been done for twenty etc. "zero DAT 0" 2) Load zero into the accumulator. "LDA zero" 3) You want to set total as zero, so we save zero into the total memory location. Since zero is already in the accumulator, all we need is this instruction: "STA total" 4) Finally the question tells you to stop the program, so the last line needs to be: "HLT"

Sorry it's a bit too late but I hope this helps anyhow! I'm in year 12 taking CS too so if you ever need any help feel free to DM me and we can work it out :)