OK, let's work through this together. We're starting with 428 and we're going to multiply it by 34, which means we add 428 to itself 34 times.
Step 1: 0 + 428 = 428
Step 2: 428 + 428 = 856
Step 3: 856 + 428 = 1284
Step 4: 1284 + 428 = 1712
Step 5: 1712 + 428 = 2140
Step 6: 2140 + 428 = 2568
Step 7: 2568 + 428 = 2996
Step 8: 2996 + 428 = 3424
Step 9: 3424 + 428 = 3852
Step 10: 3852 + 428 = 4280
Step 11: 4280 + 428 = 4708
Step 12: 4708 + 428 = 5136
Step 13: 5136 + 428 = 5564
Step 14: 5564 + 428 = 5992
Step 15: 5992 + 428 = 6420
Step 16: 6420 + 428 = 6848
Step 17: 6848 + 428 = 7276
Step 18: 7276 + 428 = 7704
Step 19: 7704 + 428 = 8132
Step 20: 8132 + 428 = 8560
Step 21: 8560 + 428 = 8988
Step 22: 8988 + 428 = 9416
Step 23: 9416 + 428 = 9844
Step 24: 9844 + 428 = 10272
Step 25: 10272 + 428 = 10700
Step 26: 10700 + 428 = 11128
Step 27: 11128 + 428 = 11556
Step 28: 11556 + 428 = 11984
Step 29: 11984 + 428 = 12412
Step 30: 12412 + 428 = 12840
Step 31: 12840 + 428 = 13268
Step 32: 13268 + 428 = 13696
Step 33: 13696 + 428 = 14124
Step 34: 14124 + 428 = 14552

So, 428*34 = 14552