Without delay, let's solve this. We've got 830 and we will be multiplying it by 45, that is, adding 830 to itself 45 times.
Step 1: 0 + 830 = 830
Step 2: 830 + 830 = 1660
Step 3: 1660 + 830 = 2490
Step 4: 2490 + 830 = 3320
Step 5: 3320 + 830 = 4150
Step 6: 4150 + 830 = 4980
Step 7: 4980 + 830 = 5810
Step 8: 5810 + 830 = 6640
Step 9: 6640 + 830 = 7470
Step 10: 7470 + 830 = 8300
Step 11: 8300 + 830 = 9130
Step 12: 9130 + 830 = 9960
Step 13: 9960 + 830 = 10790
Step 14: 10790 + 830 = 11620
Step 15: 11620 + 830 = 12450
Step 16: 12450 + 830 = 13280
Step 17: 13280 + 830 = 14110
Step 18: 14110 + 830 = 14940
Step 19: 14940 + 830 = 15770
Step 20: 15770 + 830 = 16600
Step 21: 16600 + 830 = 17430
Step 22: 17430 + 830 = 18260
Step 23: 18260 + 830 = 19090
Step 24: 19090 + 830 = 19920
Step 25: 19920 + 830 = 20750
Step 26: 20750 + 830 = 21580
Step 27: 21580 + 830 = 22410
Step 28: 22410 + 830 = 23240
Step 29: 23240 + 830 = 24070
Step 30: 24070 + 830 = 24900
Step 31: 24900 + 830 = 25730
Step 32: 25730 + 830 = 26560
Step 33: 26560 + 830 = 27390
Step 34: 27390 + 830 = 28220
Step 35: 28220 + 830 = 29050
Step 36: 29050 + 830 = 29880
Step 37: 29880 + 830 = 30710
Step 38: 30710 + 830 = 31540
Step 39: 31540 + 830 = 32370
Step 40: 32370 + 830 = 33200
Step 41: 33200 + 830 = 34030
Step 42: 34030 + 830 = 34860
Step 43: 34860 + 830 = 35690
Step 44: 35690 + 830 = 36520
Step 45: 36520 + 830 = 37350

So, 830*45 = 37350