OK, let's work through this together. We're starting with 610 and we're going to multiply it by 68, which means we add 610 to itself 68 times.
Step 1: 0 + 610 = 610
Step 2: 610 + 610 = 1220
Step 3: 1220 + 610 = 1830
Step 4: 1830 + 610 = 2440
Step 5: 2440 + 610 = 3050
Step 6: 3050 + 610 = 3660
Step 7: 3660 + 610 = 4270
Step 8: 4270 + 610 = 4880
Step 9: 4880 + 610 = 5490
Step 10: 5490 + 610 = 6100
Step 11: 6100 + 610 = 6710
Step 12: 6710 + 610 = 7320
Step 13: 7320 + 610 = 7930
Step 14: 7930 + 610 = 8540
Step 15: 8540 + 610 = 9150
Step 16: 9150 + 610 = 9760
Step 17: 9760 + 610 = 10370
Step 18: 10370 + 610 = 10980
Step 19: 10980 + 610 = 11590
Step 20: 11590 + 610 = 12200
Step 21: 12200 + 610 = 12810
Step 22: 12810 + 610 = 13420
Step 23: 13420 + 610 = 14030
Step 24: 14030 + 610 = 14640
Step 25: 14640 + 610 = 15250
Step 26: 15250 + 610 = 15860
Step 27: 15860 + 610 = 16470
Step 28: 16470 + 610 = 17080
Step 29: 17080 + 610 = 17690
Step 30: 17690 + 610 = 18300
Step 31: 18300 + 610 = 18910
Step 32: 18910 + 610 = 19520
Step 33: 19520 + 610 = 20130
Step 34: 20130 + 610 = 20740
Step 35: 20740 + 610 = 21350
Step 36: 21350 + 610 = 21960
Step 37: 21960 + 610 = 22570
Step 38: 22570 + 610 = 23180
Step 39: 23180 + 610 = 23790
Step 40: 23790 + 610 = 24400
Step 41: 24400 + 610 = 25010
Step 42: 25010 + 610 = 25620
Step 43: 25620 + 610 = 26230
Step 44: 26230 + 610 = 26840
Step 45: 26840 + 610 = 27450
Step 46: 27450 + 610 = 28060
Step 47: 28060 + 610 = 28670
Step 48: 28670 + 610 = 29280
Step 49: 29280 + 610 = 29890
Step 50: 29890 + 610 = 30500
Step 51: 30500 + 610 = 31110
Step 52: 31110 + 610 = 31720
Step 53: 31720 + 610 = 32330
Step 54: 32330 + 610 = 32940
Step 55: 32940 + 610 = 33550
Step 56: 33550 + 610 = 34160
Step 57: 34160 + 610 = 34770
Step 58: 34770 + 610 = 35380
Step 59: 35380 + 610 = 35990
Step 60: 35990 + 610 = 36600
Step 61: 36600 + 610 = 37210
Step 62: 37210 + 610 = 37820
Step 63: 37820 + 610 = 38430
Step 64: 38430 + 610 = 39040
Step 65: 39040 + 610 = 39650
Step 66: 39650 + 610 = 40260
Step 67: 40260 + 610 = 40870
Step 68: 40870 + 610 = 41480

So, 610*68 = 41480