Alright, let's solve this math problem step by step. First, we have the number 622. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 45. So, we're going to take the number 622 and add it to itself 45 times.
Step 1: 0 + 622 = 622
Step 2: 622 + 622 = 1244
Step 3: 1244 + 622 = 1866
Step 4: 1866 + 622 = 2488
Step 5: 2488 + 622 = 3110
Step 6: 3110 + 622 = 3732
Step 7: 3732 + 622 = 4354
Step 8: 4354 + 622 = 4976
Step 9: 4976 + 622 = 5598
Step 10: 5598 + 622 = 6220
Step 11: 6220 + 622 = 6842
Step 12: 6842 + 622 = 7464
Step 13: 7464 + 622 = 8086
Step 14: 8086 + 622 = 8708
Step 15: 8708 + 622 = 9330
Step 16: 9330 + 622 = 9952
Step 17: 9952 + 622 = 10574
Step 18: 10574 + 622 = 11196
Step 19: 11196 + 622 = 11818
Step 20: 11818 + 622 = 12440
Step 21: 12440 + 622 = 13062
Step 22: 13062 + 622 = 13684
Step 23: 13684 + 622 = 14306
Step 24: 14306 + 622 = 14928
Step 25: 14928 + 622 = 15550
Step 26: 15550 + 622 = 16172
Step 27: 16172 + 622 = 16794
Step 28: 16794 + 622 = 17416
Step 29: 17416 + 622 = 18038
Step 30: 18038 + 622 = 18660
Step 31: 18660 + 622 = 19282
Step 32: 19282 + 622 = 19904
Step 33: 19904 + 622 = 20526
Step 34: 20526 + 622 = 21148
Step 35: 21148 + 622 = 21770
Step 36: 21770 + 622 = 22392
Step 37: 22392 + 622 = 23014
Step 38: 23014 + 622 = 23636
Step 39: 23636 + 622 = 24258
Step 40: 24258 + 622 = 24880
Step 41: 24880 + 622 = 25502
Step 42: 25502 + 622 = 26124
Step 43: 26124 + 622 = 26746
Step 44: 26746 + 622 = 27368
Step 45: 27368 + 622 = 27990

So, 622*45 = 27990