Let's roll up our sleeves and solve this. We have 867 and we're going to multiply it by 55, essentially adding 867 to itself 55 times.
Step 1: 0 + 867 = 867
Step 2: 867 + 867 = 1734
Step 3: 1734 + 867 = 2601
Step 4: 2601 + 867 = 3468
Step 5: 3468 + 867 = 4335
Step 6: 4335 + 867 = 5202
Step 7: 5202 + 867 = 6069
Step 8: 6069 + 867 = 6936
Step 9: 6936 + 867 = 7803
Step 10: 7803 + 867 = 8670
Step 11: 8670 + 867 = 9537
Step 12: 9537 + 867 = 10404
Step 13: 10404 + 867 = 11271
Step 14: 11271 + 867 = 12138
Step 15: 12138 + 867 = 13005
Step 16: 13005 + 867 = 13872
Step 17: 13872 + 867 = 14739
Step 18: 14739 + 867 = 15606
Step 19: 15606 + 867 = 16473
Step 20: 16473 + 867 = 17340
Step 21: 17340 + 867 = 18207
Step 22: 18207 + 867 = 19074
Step 23: 19074 + 867 = 19941
Step 24: 19941 + 867 = 20808
Step 25: 20808 + 867 = 21675
Step 26: 21675 + 867 = 22542
Step 27: 22542 + 867 = 23409
Step 28: 23409 + 867 = 24276
Step 29: 24276 + 867 = 25143
Step 30: 25143 + 867 = 26010
Step 31: 26010 + 867 = 26877
Step 32: 26877 + 867 = 27744
Step 33: 27744 + 867 = 28611
Step 34: 28611 + 867 = 29478
Step 35: 29478 + 867 = 30345
Step 36: 30345 + 867 = 31212
Step 37: 31212 + 867 = 32079
Step 38: 32079 + 867 = 32946
Step 39: 32946 + 867 = 33813
Step 40: 33813 + 867 = 34680
Step 41: 34680 + 867 = 35547
Step 42: 35547 + 867 = 36414
Step 43: 36414 + 867 = 37281
Step 44: 37281 + 867 = 38148
Step 45: 38148 + 867 = 39015
Step 46: 39015 + 867 = 39882
Step 47: 39882 + 867 = 40749
Step 48: 40749 + 867 = 41616
Step 49: 41616 + 867 = 42483
Step 50: 42483 + 867 = 43350
Step 51: 43350 + 867 = 44217
Step 52: 44217 + 867 = 45084
Step 53: 45084 + 867 = 45951
Step 54: 45951 + 867 = 46818
Step 55: 46818 + 867 = 47685

So, 867*55 = 47685