Let's roll up our sleeves and solve this. We have 920 and we're going to multiply it by 34, essentially adding 920 to itself 34 times.
Step 1: 0 + 920 = 920
Step 2: 920 + 920 = 1840
Step 3: 1840 + 920 = 2760
Step 4: 2760 + 920 = 3680
Step 5: 3680 + 920 = 4600
Step 6: 4600 + 920 = 5520
Step 7: 5520 + 920 = 6440
Step 8: 6440 + 920 = 7360
Step 9: 7360 + 920 = 8280
Step 10: 8280 + 920 = 9200
Step 11: 9200 + 920 = 10120
Step 12: 10120 + 920 = 11040
Step 13: 11040 + 920 = 11960
Step 14: 11960 + 920 = 12880
Step 15: 12880 + 920 = 13800
Step 16: 13800 + 920 = 14720
Step 17: 14720 + 920 = 15640
Step 18: 15640 + 920 = 16560
Step 19: 16560 + 920 = 17480
Step 20: 17480 + 920 = 18400
Step 21: 18400 + 920 = 19320
Step 22: 19320 + 920 = 20240
Step 23: 20240 + 920 = 21160
Step 24: 21160 + 920 = 22080
Step 25: 22080 + 920 = 23000
Step 26: 23000 + 920 = 23920
Step 27: 23920 + 920 = 24840
Step 28: 24840 + 920 = 25760
Step 29: 25760 + 920 = 26680
Step 30: 26680 + 920 = 27600
Step 31: 27600 + 920 = 28520
Step 32: 28520 + 920 = 29440
Step 33: 29440 + 920 = 30360
Step 34: 30360 + 920 = 31280

So, 920*34 = 31280