Sure thing! We've got 205 and we're gonna multiply it by 85. That's the same as adding 205 to itself 85 times.
Step 1: 0 + 205 = 205
Step 2: 205 + 205 = 410
Step 3: 410 + 205 = 615
Step 4: 615 + 205 = 820
Step 5: 820 + 205 = 1025
Step 6: 1025 + 205 = 1230
Step 7: 1230 + 205 = 1435
Step 8: 1435 + 205 = 1640
Step 9: 1640 + 205 = 1845
Step 10: 1845 + 205 = 2050
Step 11: 2050 + 205 = 2255
Step 12: 2255 + 205 = 2460
Step 13: 2460 + 205 = 2665
Step 14: 2665 + 205 = 2870
Step 15: 2870 + 205 = 3075
Step 16: 3075 + 205 = 3280
Step 17: 3280 + 205 = 3485
Step 18: 3485 + 205 = 3690
Step 19: 3690 + 205 = 3895
Step 20: 3895 + 205 = 4100
Step 21: 4100 + 205 = 4305
Step 22: 4305 + 205 = 4510
Step 23: 4510 + 205 = 4715
Step 24: 4715 + 205 = 4920
Step 25: 4920 + 205 = 5125
Step 26: 5125 + 205 = 5330
Step 27: 5330 + 205 = 5535
Step 28: 5535 + 205 = 5740
Step 29: 5740 + 205 = 5945
Step 30: 5945 + 205 = 6150
Step 31: 6150 + 205 = 6355
Step 32: 6355 + 205 = 6560
Step 33: 6560 + 205 = 6765
Step 34: 6765 + 205 = 6970
Step 35: 6970 + 205 = 7175
Step 36: 7175 + 205 = 7380
Step 37: 7380 + 205 = 7585
Step 38: 7585 + 205 = 7790
Step 39: 7790 + 205 = 7995
Step 40: 7995 + 205 = 8200
Step 41: 8200 + 205 = 8405
Step 42: 8405 + 205 = 8610
Step 43: 8610 + 205 = 8815
Step 44: 8815 + 205 = 9020
Step 45: 9020 + 205 = 9225
Step 46: 9225 + 205 = 9430
Step 47: 9430 + 205 = 9635
Step 48: 9635 + 205 = 9840
Step 49: 9840 + 205 = 10045
Step 50: 10045 + 205 = 10250
Step 51: 10250 + 205 = 10455
Step 52: 10455 + 205 = 10660
Step 53: 10660 + 205 = 10865
Step 54: 10865 + 205 = 11070
Step 55: 11070 + 205 = 11275
Step 56: 11275 + 205 = 11480
Step 57: 11480 + 205 = 11685
Step 58: 11685 + 205 = 11890
Step 59: 11890 + 205 = 12095
Step 60: 12095 + 205 = 12300
Step 61: 12300 + 205 = 12505
Step 62: 12505 + 205 = 12710
Step 63: 12710 + 205 = 12915
Step 64: 12915 + 205 = 13120
Step 65: 13120 + 205 = 13325
Step 66: 13325 + 205 = 13530
Step 67: 13530 + 205 = 13735
Step 68: 13735 + 205 = 13940
Step 69: 13940 + 205 = 14145
Step 70: 14145 + 205 = 14350
Step 71: 14350 + 205 = 14555
Step 72: 14555 + 205 = 14760
Step 73: 14760 + 205 = 14965
Step 74: 14965 + 205 = 15170
Step 75: 15170 + 205 = 15375
Step 76: 15375 + 205 = 15580
Step 77: 15580 + 205 = 15785
Step 78: 15785 + 205 = 15990
Step 79: 15990 + 205 = 16195
Step 80: 16195 + 205 = 16400
Step 81: 16400 + 205 = 16605
Step 82: 16605 + 205 = 16810
Step 83: 16810 + 205 = 17015
Step 84: 17015 + 205 = 17220
Step 85: 17220 + 205 = 17425

So, 205*85 = 17425