OK, let's crack this. We're given 548 and our task is to multiply it by 57. Essentially, we'll be adding 548 to itself 57 times.
Step 1: 0 + 548 = 548
Step 2: 548 + 548 = 1096
Step 3: 1096 + 548 = 1644
Step 4: 1644 + 548 = 2192
Step 5: 2192 + 548 = 2740
Step 6: 2740 + 548 = 3288
Step 7: 3288 + 548 = 3836
Step 8: 3836 + 548 = 4384
Step 9: 4384 + 548 = 4932
Step 10: 4932 + 548 = 5480
Step 11: 5480 + 548 = 6028
Step 12: 6028 + 548 = 6576
Step 13: 6576 + 548 = 7124
Step 14: 7124 + 548 = 7672
Step 15: 7672 + 548 = 8220
Step 16: 8220 + 548 = 8768
Step 17: 8768 + 548 = 9316
Step 18: 9316 + 548 = 9864
Step 19: 9864 + 548 = 10412
Step 20: 10412 + 548 = 10960
Step 21: 10960 + 548 = 11508
Step 22: 11508 + 548 = 12056
Step 23: 12056 + 548 = 12604
Step 24: 12604 + 548 = 13152
Step 25: 13152 + 548 = 13700
Step 26: 13700 + 548 = 14248
Step 27: 14248 + 548 = 14796
Step 28: 14796 + 548 = 15344
Step 29: 15344 + 548 = 15892
Step 30: 15892 + 548 = 16440
Step 31: 16440 + 548 = 16988
Step 32: 16988 + 548 = 17536
Step 33: 17536 + 548 = 18084
Step 34: 18084 + 548 = 18632
Step 35: 18632 + 548 = 19180
Step 36: 19180 + 548 = 19728
Step 37: 19728 + 548 = 20276
Step 38: 20276 + 548 = 20824
Step 39: 20824 + 548 = 21372
Step 40: 21372 + 548 = 21920
Step 41: 21920 + 548 = 22468
Step 42: 22468 + 548 = 23016
Step 43: 23016 + 548 = 23564
Step 44: 23564 + 548 = 24112
Step 45: 24112 + 548 = 24660
Step 46: 24660 + 548 = 25208
Step 47: 25208 + 548 = 25756
Step 48: 25756 + 548 = 26304
Step 49: 26304 + 548 = 26852
Step 50: 26852 + 548 = 27400
Step 51: 27400 + 548 = 27948
Step 52: 27948 + 548 = 28496
Step 53: 28496 + 548 = 29044
Step 54: 29044 + 548 = 29592
Step 55: 29592 + 548 = 30140
Step 56: 30140 + 548 = 30688
Step 57: 30688 + 548 = 31236

So, 548*57 = 31236