Alright, let's solve this math problem step by step. First, we have the number 668. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 65. So, we're going to take the number 668 and add it to itself 65 times.
Step 1: 0 + 668 = 668
Step 2: 668 + 668 = 1336
Step 3: 1336 + 668 = 2004
Step 4: 2004 + 668 = 2672
Step 5: 2672 + 668 = 3340
Step 6: 3340 + 668 = 4008
Step 7: 4008 + 668 = 4676
Step 8: 4676 + 668 = 5344
Step 9: 5344 + 668 = 6012
Step 10: 6012 + 668 = 6680
Step 11: 6680 + 668 = 7348
Step 12: 7348 + 668 = 8016
Step 13: 8016 + 668 = 8684
Step 14: 8684 + 668 = 9352
Step 15: 9352 + 668 = 10020
Step 16: 10020 + 668 = 10688
Step 17: 10688 + 668 = 11356
Step 18: 11356 + 668 = 12024
Step 19: 12024 + 668 = 12692
Step 20: 12692 + 668 = 13360
Step 21: 13360 + 668 = 14028
Step 22: 14028 + 668 = 14696
Step 23: 14696 + 668 = 15364
Step 24: 15364 + 668 = 16032
Step 25: 16032 + 668 = 16700
Step 26: 16700 + 668 = 17368
Step 27: 17368 + 668 = 18036
Step 28: 18036 + 668 = 18704
Step 29: 18704 + 668 = 19372
Step 30: 19372 + 668 = 20040
Step 31: 20040 + 668 = 20708
Step 32: 20708 + 668 = 21376
Step 33: 21376 + 668 = 22044
Step 34: 22044 + 668 = 22712
Step 35: 22712 + 668 = 23380
Step 36: 23380 + 668 = 24048
Step 37: 24048 + 668 = 24716
Step 38: 24716 + 668 = 25384
Step 39: 25384 + 668 = 26052
Step 40: 26052 + 668 = 26720
Step 41: 26720 + 668 = 27388
Step 42: 27388 + 668 = 28056
Step 43: 28056 + 668 = 28724
Step 44: 28724 + 668 = 29392
Step 45: 29392 + 668 = 30060
Step 46: 30060 + 668 = 30728
Step 47: 30728 + 668 = 31396
Step 48: 31396 + 668 = 32064
Step 49: 32064 + 668 = 32732
Step 50: 32732 + 668 = 33400
Step 51: 33400 + 668 = 34068
Step 52: 34068 + 668 = 34736
Step 53: 34736 + 668 = 35404
Step 54: 35404 + 668 = 36072
Step 55: 36072 + 668 = 36740
Step 56: 36740 + 668 = 37408
Step 57: 37408 + 668 = 38076
Step 58: 38076 + 668 = 38744
Step 59: 38744 + 668 = 39412
Step 60: 39412 + 668 = 40080
Step 61: 40080 + 668 = 40748
Step 62: 40748 + 668 = 41416
Step 63: 41416 + 668 = 42084
Step 64: 42084 + 668 = 42752
Step 65: 42752 + 668 = 43420

So, 668*65 = 43420