Let's roll up our sleeves and solve this. We have 350 and we're going to multiply it by 77, essentially adding 350 to itself 77 times.
Step 1: 0 + 350 = 350
Step 2: 350 + 350 = 700
Step 3: 700 + 350 = 1050
Step 4: 1050 + 350 = 1400
Step 5: 1400 + 350 = 1750
Step 6: 1750 + 350 = 2100
Step 7: 2100 + 350 = 2450
Step 8: 2450 + 350 = 2800
Step 9: 2800 + 350 = 3150
Step 10: 3150 + 350 = 3500
Step 11: 3500 + 350 = 3850
Step 12: 3850 + 350 = 4200
Step 13: 4200 + 350 = 4550
Step 14: 4550 + 350 = 4900
Step 15: 4900 + 350 = 5250
Step 16: 5250 + 350 = 5600
Step 17: 5600 + 350 = 5950
Step 18: 5950 + 350 = 6300
Step 19: 6300 + 350 = 6650
Step 20: 6650 + 350 = 7000
Step 21: 7000 + 350 = 7350
Step 22: 7350 + 350 = 7700
Step 23: 7700 + 350 = 8050
Step 24: 8050 + 350 = 8400
Step 25: 8400 + 350 = 8750
Step 26: 8750 + 350 = 9100
Step 27: 9100 + 350 = 9450
Step 28: 9450 + 350 = 9800
Step 29: 9800 + 350 = 10150
Step 30: 10150 + 350 = 10500
Step 31: 10500 + 350 = 10850
Step 32: 10850 + 350 = 11200
Step 33: 11200 + 350 = 11550
Step 34: 11550 + 350 = 11900
Step 35: 11900 + 350 = 12250
Step 36: 12250 + 350 = 12600
Step 37: 12600 + 350 = 12950
Step 38: 12950 + 350 = 13300
Step 39: 13300 + 350 = 13650
Step 40: 13650 + 350 = 14000
Step 41: 14000 + 350 = 14350
Step 42: 14350 + 350 = 14700
Step 43: 14700 + 350 = 15050
Step 44: 15050 + 350 = 15400
Step 45: 15400 + 350 = 15750
Step 46: 15750 + 350 = 16100
Step 47: 16100 + 350 = 16450
Step 48: 16450 + 350 = 16800
Step 49: 16800 + 350 = 17150
Step 50: 17150 + 350 = 17500
Step 51: 17500 + 350 = 17850
Step 52: 17850 + 350 = 18200
Step 53: 18200 + 350 = 18550
Step 54: 18550 + 350 = 18900
Step 55: 18900 + 350 = 19250
Step 56: 19250 + 350 = 19600
Step 57: 19600 + 350 = 19950
Step 58: 19950 + 350 = 20300
Step 59: 20300 + 350 = 20650
Step 60: 20650 + 350 = 21000
Step 61: 21000 + 350 = 21350
Step 62: 21350 + 350 = 21700
Step 63: 21700 + 350 = 22050
Step 64: 22050 + 350 = 22400
Step 65: 22400 + 350 = 22750
Step 66: 22750 + 350 = 23100
Step 67: 23100 + 350 = 23450
Step 68: 23450 + 350 = 23800
Step 69: 23800 + 350 = 24150
Step 70: 24150 + 350 = 24500
Step 71: 24500 + 350 = 24850
Step 72: 24850 + 350 = 25200
Step 73: 25200 + 350 = 25550
Step 74: 25550 + 350 = 25900
Step 75: 25900 + 350 = 26250
Step 76: 26250 + 350 = 26600
Step 77: 26600 + 350 = 26950

So, 350*77 = 26950