Sure thing! We've got 72 and we're gonna multiply it by 224. That's the same as adding 72 to itself 224 times.
Step 1: 0 + 72 = 72
Step 2: 72 + 72 = 144
Step 3: 144 + 72 = 216
Step 4: 216 + 72 = 288
Step 5: 288 + 72 = 360
Step 6: 360 + 72 = 432
Step 7: 432 + 72 = 504
Step 8: 504 + 72 = 576
Step 9: 576 + 72 = 648
Step 10: 648 + 72 = 720
Step 11: 720 + 72 = 792
Step 12: 792 + 72 = 864
Step 13: 864 + 72 = 936
Step 14: 936 + 72 = 1008
Step 15: 1008 + 72 = 1080
Step 16: 1080 + 72 = 1152
Step 17: 1152 + 72 = 1224
Step 18: 1224 + 72 = 1296
Step 19: 1296 + 72 = 1368
Step 20: 1368 + 72 = 1440
Step 21: 1440 + 72 = 1512
Step 22: 1512 + 72 = 1584
Step 23: 1584 + 72 = 1656
Step 24: 1656 + 72 = 1728
Step 25: 1728 + 72 = 1800
Step 26: 1800 + 72 = 1872
Step 27: 1872 + 72 = 1944
Step 28: 1944 + 72 = 2016
Step 29: 2016 + 72 = 2088
Step 30: 2088 + 72 = 2160
Step 31: 2160 + 72 = 2232
Step 32: 2232 + 72 = 2304
Step 33: 2304 + 72 = 2376
Step 34: 2376 + 72 = 2448
Step 35: 2448 + 72 = 2520
Step 36: 2520 + 72 = 2592
Step 37: 2592 + 72 = 2664
Step 38: 2664 + 72 = 2736
Step 39: 2736 + 72 = 2808
Step 40: 2808 + 72 = 2880
Step 41: 2880 + 72 = 2952
Step 42: 2952 + 72 = 3024
Step 43: 3024 + 72 = 3096
Step 44: 3096 + 72 = 3168
Step 45: 3168 + 72 = 3240
Step 46: 3240 + 72 = 3312
Step 47: 3312 + 72 = 3384
Step 48: 3384 + 72 = 3456
Step 49: 3456 + 72 = 3528
Step 50: 3528 + 72 = 3600
Step 51: 3600 + 72 = 3672
Step 52: 3672 + 72 = 3744
Step 53: 3744 + 72 = 3816
Step 54: 3816 + 72 = 3888
Step 55: 3888 + 72 = 3960
Step 56: 3960 + 72 = 4032
Step 57: 4032 + 72 = 4104
Step 58: 4104 + 72 = 4176
Step 59: 4176 + 72 = 4248
Step 60: 4248 + 72 = 4320
Step 61: 4320 + 72 = 4392
Step 62: 4392 + 72 = 4464
Step 63: 4464 + 72 = 4536
Step 64: 4536 + 72 = 4608
Step 65: 4608 + 72 = 4680
Step 66: 4680 + 72 = 4752
Step 67: 4752 + 72 = 4824
Step 68: 4824 + 72 = 4896
Step 69: 4896 + 72 = 4968
Step 70: 4968 + 72 = 5040
Step 71: 5040 + 72 = 5112
Step 72: 5112 + 72 = 5184
Step 73: 5184 + 72 = 5256
Step 74: 5256 + 72 = 5328
Step 75: 5328 + 72 = 5400
Step 76: 5400 + 72 = 5472
Step 77: 5472 + 72 = 5544
Step 78: 5544 + 72 = 5616
Step 79: 5616 + 72 = 5688
Step 80: 5688 + 72 = 5760
Step 81: 5760 + 72 = 5832
Step 82: 5832 + 72 = 5904
Step 83: 5904 + 72 = 5976
Step 84: 5976 + 72 = 6048
Step 85: 6048 + 72 = 6120
Step 86: 6120 + 72 = 6192
Step 87: 6192 + 72 = 6264
Step 88: 6264 + 72 = 6336
Step 89: 6336 + 72 = 6408
Step 90: 6408 + 72 = 6480
Step 91: 6480 + 72 = 6552
Step 92: 6552 + 72 = 6624
Step 93: 6624 + 72 = 6696
Step 94: 6696 + 72 = 6768
Step 95: 6768 + 72 = 6840
Step 96: 6840 + 72 = 6912
Step 97: 6912 + 72 = 6984
Step 98: 6984 + 72 = 7056
Step 99: 7056 + 72 = 7128
Step 100: 7128 + 72 = 7200
Step 101: 7200 + 72 = 7272
Step 102: 7272 + 72 = 7344
Step 103: 7344 + 72 = 7416
Step 104: 7416 + 72 = 7488
Step 105: 7488 + 72 = 7560
Step 106: 7560 + 72 = 7632
Step 107: 7632 + 72 = 7704
Step 108: 7704 + 72 = 7776
Step 109: 7776 + 72 = 7848
Step 110: 7848 + 72 = 7920
Step 111: 7920 + 72 = 7992
Step 112: 7992 + 72 = 8064
Step 113: 8064 + 72 = 8136
Step 114: 8136 + 72 = 8208
Step 115: 8208 + 72 = 8280
Step 116: 8280 + 72 = 8352
Step 117: 8352 + 72 = 8424
Step 118: 8424 + 72 = 8496
Step 119: 8496 + 72 = 8568
Step 120: 8568 + 72 = 8640
Step 121: 8640 + 72 = 8712
Step 122: 8712 + 72 = 8784
Step 123: 8784 + 72 = 8856
Step 124: 8856 + 72 = 8928
Step 125: 8928 + 72 = 9000
Step 126: 9000 + 72 = 9072
Step 127: 9072 + 72 = 9144
Step 128: 9144 + 72 = 9216
Step 129: 9216 + 72 = 9288
Step 130: 9288 + 72 = 9360
Step 131: 9360 + 72 = 9432
Step 132: 9432 + 72 = 9504
Step 133: 9504 + 72 = 9576
Step 134: 9576 + 72 = 9648
Step 135: 9648 + 72 = 9720
Step 136: 9720 + 72 = 9792
Step 137: 9792 + 72 = 9864
Step 138: 9864 + 72 = 9936
Step 139: 9936 + 72 = 10008
Step 140: 10008 + 72 = 10080
Step 141: 10080 + 72 = 10152
Step 142: 10152 + 72 = 10224
Step 143: 10224 + 72 = 10296
Step 144: 10296 + 72 = 10368
Step 145: 10368 + 72 = 10440
Step 146: 10440 + 72 = 10512
Step 147: 10512 + 72 = 10584
Step 148: 10584 + 72 = 10656
Step 149: 10656 + 72 = 10728
Step 150: 10728 + 72 = 10800
Step 151: 10800 + 72 = 10872
Step 152: 10872 + 72 = 10944
Step 153: 10944 + 72 = 11016
Step 154: 11016 + 72 = 11088
Step 155: 11088 + 72 = 11160
Step 156: 11160 + 72 = 11232
Step 157: 11232 + 72 = 11304
Step 158: 11304 + 72 = 11376
Step 159: 11376 + 72 = 11448
Step 160: 11448 + 72 = 11520
Step 161: 11520 + 72 = 11592
Step 162: 11592 + 72 = 11664
Step 163: 11664 + 72 = 11736
Step 164: 11736 + 72 = 11808
Step 165: 11808 + 72 = 11880
Step 166: 11880 + 72 = 11952
Step 167: 11952 + 72 = 12024
Step 168: 12024 + 72 = 12096
Step 169: 12096 + 72 = 12168
Step 170: 12168 + 72 = 12240
Step 171: 12240 + 72 = 12312
Step 172: 12312 + 72 = 12384
Step 173: 12384 + 72 = 12456
Step 174: 12456 + 72 = 12528
Step 175: 12528 + 72 = 12600
Step 176: 12600 + 72 = 12672
Step 177: 12672 + 72 = 12744
Step 178: 12744 + 72 = 12816
Step 179: 12816 + 72 = 12888
Step 180: 12888 + 72 = 12960
Step 181: 12960 + 72 = 13032
Step 182: 13032 + 72 = 13104
Step 183: 13104 + 72 = 13176
Step 184: 13176 + 72 = 13248
Step 185: 13248 + 72 = 13320
Step 186: 13320 + 72 = 13392
Step 187: 13392 + 72 = 13464
Step 188: 13464 + 72 = 13536
Step 189: 13536 + 72 = 13608
Step 190: 13608 + 72 = 13680
Step 191: 13680 + 72 = 13752
Step 192: 13752 + 72 = 13824
Step 193: 13824 + 72 = 13896
Step 194: 13896 + 72 = 13968
Step 195: 13968 + 72 = 14040
Step 196: 14040 + 72 = 14112
Step 197: 14112 + 72 = 14184
Step 198: 14184 + 72 = 14256
Step 199: 14256 + 72 = 14328
Step 200: 14328 + 72 = 14400
Step 201: 14400 + 72 = 14472
Step 202: 14472 + 72 = 14544
Step 203: 14544 + 72 = 14616
Step 204: 14616 + 72 = 14688
Step 205: 14688 + 72 = 14760
Step 206: 14760 + 72 = 14832
Step 207: 14832 + 72 = 14904
Step 208: 14904 + 72 = 14976
Step 209: 14976 + 72 = 15048
Step 210: 15048 + 72 = 15120
Step 211: 15120 + 72 = 15192
Step 212: 15192 + 72 = 15264
Step 213: 15264 + 72 = 15336
Step 214: 15336 + 72 = 15408
Step 215: 15408 + 72 = 15480
Step 216: 15480 + 72 = 15552
Step 217: 15552 + 72 = 15624
Step 218: 15624 + 72 = 15696
Step 219: 15696 + 72 = 15768
Step 220: 15768 + 72 = 15840
Step 221: 15840 + 72 = 15912
Step 222: 15912 + 72 = 15984
Step 223: 15984 + 72 = 16056
Step 224: 16056 + 72 = 16128

So, 72*224 = 16128