OK, let's crack this. We're given 3 and our task is to multiply it by 56. Essentially, we'll be adding 3 to itself 56 times.
Step 1: 0 + 3 = 3
Step 2: 3 + 3 = 6
Step 3: 6 + 3 = 9
Step 4: 9 + 3 = 12
Step 5: 12 + 3 = 15
Step 6: 15 + 3 = 18
Step 7: 18 + 3 = 21
Step 8: 21 + 3 = 24
Step 9: 24 + 3 = 27
Step 10: 27 + 3 = 30
Step 11: 30 + 3 = 33
Step 12: 33 + 3 = 36
Step 13: 36 + 3 = 39
Step 14: 39 + 3 = 42
Step 15: 42 + 3 = 45
Step 16: 45 + 3 = 48
Step 17: 48 + 3 = 51
Step 18: 51 + 3 = 54
Step 19: 54 + 3 = 57
Step 20: 57 + 3 = 60
Step 21: 60 + 3 = 63
Step 22: 63 + 3 = 66
Step 23: 66 + 3 = 69
Step 24: 69 + 3 = 72
Step 25: 72 + 3 = 75
Step 26: 75 + 3 = 78
Step 27: 78 + 3 = 81
Step 28: 81 + 3 = 84
Step 29: 84 + 3 = 87
Step 30: 87 + 3 = 90
Step 31: 90 + 3 = 93
Step 32: 93 + 3 = 96
Step 33: 96 + 3 = 99
Step 34: 99 + 3 = 102
Step 35: 102 + 3 = 105
Step 36: 105 + 3 = 108
Step 37: 108 + 3 = 111
Step 38: 111 + 3 = 114
Step 39: 114 + 3 = 117
Step 40: 117 + 3 = 120
Step 41: 120 + 3 = 123
Step 42: 123 + 3 = 126
Step 43: 126 + 3 = 129
Step 44: 129 + 3 = 132
Step 45: 132 + 3 = 135
Step 46: 135 + 3 = 138
Step 47: 138 + 3 = 141
Step 48: 141 + 3 = 144
Step 49: 144 + 3 = 147
Step 50: 147 + 3 = 150
Step 51: 150 + 3 = 153
Step 52: 153 + 3 = 156
Step 53: 156 + 3 = 159
Step 54: 159 + 3 = 162
Step 55: 162 + 3 = 165
Step 56: 165 + 3 = 168

So, 3*56 = 168