Sure thing, let's get straight to it. We start with 985 and we're going to multiply it by 80, which means adding 985 to itself 80 times.
Step 1: 0 + 985 = 985
Step 2: 985 + 985 = 1970
Step 3: 1970 + 985 = 2955
Step 4: 2955 + 985 = 3940
Step 5: 3940 + 985 = 4925
Step 6: 4925 + 985 = 5910
Step 7: 5910 + 985 = 6895
Step 8: 6895 + 985 = 7880
Step 9: 7880 + 985 = 8865
Step 10: 8865 + 985 = 9850
Step 11: 9850 + 985 = 10835
Step 12: 10835 + 985 = 11820
Step 13: 11820 + 985 = 12805
Step 14: 12805 + 985 = 13790
Step 15: 13790 + 985 = 14775
Step 16: 14775 + 985 = 15760
Step 17: 15760 + 985 = 16745
Step 18: 16745 + 985 = 17730
Step 19: 17730 + 985 = 18715
Step 20: 18715 + 985 = 19700
Step 21: 19700 + 985 = 20685
Step 22: 20685 + 985 = 21670
Step 23: 21670 + 985 = 22655
Step 24: 22655 + 985 = 23640
Step 25: 23640 + 985 = 24625
Step 26: 24625 + 985 = 25610
Step 27: 25610 + 985 = 26595
Step 28: 26595 + 985 = 27580
Step 29: 27580 + 985 = 28565
Step 30: 28565 + 985 = 29550
Step 31: 29550 + 985 = 30535
Step 32: 30535 + 985 = 31520
Step 33: 31520 + 985 = 32505
Step 34: 32505 + 985 = 33490
Step 35: 33490 + 985 = 34475
Step 36: 34475 + 985 = 35460
Step 37: 35460 + 985 = 36445
Step 38: 36445 + 985 = 37430
Step 39: 37430 + 985 = 38415
Step 40: 38415 + 985 = 39400
Step 41: 39400 + 985 = 40385
Step 42: 40385 + 985 = 41370
Step 43: 41370 + 985 = 42355
Step 44: 42355 + 985 = 43340
Step 45: 43340 + 985 = 44325
Step 46: 44325 + 985 = 45310
Step 47: 45310 + 985 = 46295
Step 48: 46295 + 985 = 47280
Step 49: 47280 + 985 = 48265
Step 50: 48265 + 985 = 49250
Step 51: 49250 + 985 = 50235
Step 52: 50235 + 985 = 51220
Step 53: 51220 + 985 = 52205
Step 54: 52205 + 985 = 53190
Step 55: 53190 + 985 = 54175
Step 56: 54175 + 985 = 55160
Step 57: 55160 + 985 = 56145
Step 58: 56145 + 985 = 57130
Step 59: 57130 + 985 = 58115
Step 60: 58115 + 985 = 59100
Step 61: 59100 + 985 = 60085
Step 62: 60085 + 985 = 61070
Step 63: 61070 + 985 = 62055
Step 64: 62055 + 985 = 63040
Step 65: 63040 + 985 = 64025
Step 66: 64025 + 985 = 65010
Step 67: 65010 + 985 = 65995
Step 68: 65995 + 985 = 66980
Step 69: 66980 + 985 = 67965
Step 70: 67965 + 985 = 68950
Step 71: 68950 + 985 = 69935
Step 72: 69935 + 985 = 70920
Step 73: 70920 + 985 = 71905
Step 74: 71905 + 985 = 72890
Step 75: 72890 + 985 = 73875
Step 76: 73875 + 985 = 74860
Step 77: 74860 + 985 = 75845
Step 78: 75845 + 985 = 76830
Step 79: 76830 + 985 = 77815
Step 80: 77815 + 985 = 78800

So, 985*80 = 78800