Without delay, let's solve this. We've got 172 and we will be multiplying it by 328, that is, adding 172 to itself 328 times.
Step 1: 0 + 172 = 172
Step 2: 172 + 172 = 344
Step 3: 344 + 172 = 516
Step 4: 516 + 172 = 688
Step 5: 688 + 172 = 860
Step 6: 860 + 172 = 1032
Step 7: 1032 + 172 = 1204
Step 8: 1204 + 172 = 1376
Step 9: 1376 + 172 = 1548
Step 10: 1548 + 172 = 1720
Step 11: 1720 + 172 = 1892
Step 12: 1892 + 172 = 2064
Step 13: 2064 + 172 = 2236
Step 14: 2236 + 172 = 2408
Step 15: 2408 + 172 = 2580
Step 16: 2580 + 172 = 2752
Step 17: 2752 + 172 = 2924
Step 18: 2924 + 172 = 3096
Step 19: 3096 + 172 = 3268
Step 20: 3268 + 172 = 3440
Step 21: 3440 + 172 = 3612
Step 22: 3612 + 172 = 3784
Step 23: 3784 + 172 = 3956
Step 24: 3956 + 172 = 4128
Step 25: 4128 + 172 = 4300
Step 26: 4300 + 172 = 4472
Step 27: 4472 + 172 = 4644
Step 28: 4644 + 172 = 4816
Step 29: 4816 + 172 = 4988
Step 30: 4988 + 172 = 5160
Step 31: 5160 + 172 = 5332
Step 32: 5332 + 172 = 5504
Step 33: 5504 + 172 = 5676
Step 34: 5676 + 172 = 5848
Step 35: 5848 + 172 = 6020
Step 36: 6020 + 172 = 6192
Step 37: 6192 + 172 = 6364
Step 38: 6364 + 172 = 6536
Step 39: 6536 + 172 = 6708
Step 40: 6708 + 172 = 6880
Step 41: 6880 + 172 = 7052
Step 42: 7052 + 172 = 7224
Step 43: 7224 + 172 = 7396
Step 44: 7396 + 172 = 7568
Step 45: 7568 + 172 = 7740
Step 46: 7740 + 172 = 7912
Step 47: 7912 + 172 = 8084
Step 48: 8084 + 172 = 8256
Step 49: 8256 + 172 = 8428
Step 50: 8428 + 172 = 8600
Step 51: 8600 + 172 = 8772
Step 52: 8772 + 172 = 8944
Step 53: 8944 + 172 = 9116
Step 54: 9116 + 172 = 9288
Step 55: 9288 + 172 = 9460
Step 56: 9460 + 172 = 9632
Step 57: 9632 + 172 = 9804
Step 58: 9804 + 172 = 9976
Step 59: 9976 + 172 = 10148
Step 60: 10148 + 172 = 10320
Step 61: 10320 + 172 = 10492
Step 62: 10492 + 172 = 10664
Step 63: 10664 + 172 = 10836
Step 64: 10836 + 172 = 11008
Step 65: 11008 + 172 = 11180
Step 66: 11180 + 172 = 11352
Step 67: 11352 + 172 = 11524
Step 68: 11524 + 172 = 11696
Step 69: 11696 + 172 = 11868
Step 70: 11868 + 172 = 12040
Step 71: 12040 + 172 = 12212
Step 72: 12212 + 172 = 12384
Step 73: 12384 + 172 = 12556
Step 74: 12556 + 172 = 12728
Step 75: 12728 + 172 = 12900
Step 76: 12900 + 172 = 13072
Step 77: 13072 + 172 = 13244
Step 78: 13244 + 172 = 13416
Step 79: 13416 + 172 = 13588
Step 80: 13588 + 172 = 13760
Step 81: 13760 + 172 = 13932
Step 82: 13932 + 172 = 14104
Step 83: 14104 + 172 = 14276
Step 84: 14276 + 172 = 14448
Step 85: 14448 + 172 = 14620
Step 86: 14620 + 172 = 14792
Step 87: 14792 + 172 = 14964
Step 88: 14964 + 172 = 15136
Step 89: 15136 + 172 = 15308
Step 90: 15308 + 172 = 15480
Step 91: 15480 + 172 = 15652
Step 92: 15652 + 172 = 15824
Step 93: 15824 + 172 = 15996
Step 94: 15996 + 172 = 16168
Step 95: 16168 + 172 = 16340
Step 96: 16340 + 172 = 16512
Step 97: 16512 + 172 = 16684
Step 98: 16684 + 172 = 16856
Step 99: 16856 + 172 = 17028
Step 100: 17028 + 172 = 17200
Step 101: 17200 + 172 = 17372
Step 102: 17372 + 172 = 17544
Step 103: 17544 + 172 = 17716
Step 104: 17716 + 172 = 17888
Step 105: 17888 + 172 = 18060
Step 106: 18060 + 172 = 18232
Step 107: 18232 + 172 = 18404
Step 108: 18404 + 172 = 18576
Step 109: 18576 + 172 = 18748
Step 110: 18748 + 172 = 18920
Step 111: 18920 + 172 = 19092
Step 112: 19092 + 172 = 19264
Step 113: 19264 + 172 = 19436
Step 114: 19436 + 172 = 19608
Step 115: 19608 + 172 = 19780
Step 116: 19780 + 172 = 19952
Step 117: 19952 + 172 = 20124
Step 118: 20124 + 172 = 20296
Step 119: 20296 + 172 = 20468
Step 120: 20468 + 172 = 20640
Step 121: 20640 + 172 = 20812
Step 122: 20812 + 172 = 20984
Step 123: 20984 + 172 = 21156
Step 124: 21156 + 172 = 21328
Step 125: 21328 + 172 = 21500
Step 126: 21500 + 172 = 21672
Step 127: 21672 + 172 = 21844
Step 128: 21844 + 172 = 22016
Step 129: 22016 + 172 = 22188
Step 130: 22188 + 172 = 22360
Step 131: 22360 + 172 = 22532
Step 132: 22532 + 172 = 22704
Step 133: 22704 + 172 = 22876
Step 134: 22876 + 172 = 23048
Step 135: 23048 + 172 = 23220
Step 136: 23220 + 172 = 23392
Step 137: 23392 + 172 = 23564
Step 138: 23564 + 172 = 23736
Step 139: 23736 + 172 = 23908
Step 140: 23908 + 172 = 24080
Step 141: 24080 + 172 = 24252
Step 142: 24252 + 172 = 24424
Step 143: 24424 + 172 = 24596
Step 144: 24596 + 172 = 24768
Step 145: 24768 + 172 = 24940
Step 146: 24940 + 172 = 25112
Step 147: 25112 + 172 = 25284
Step 148: 25284 + 172 = 25456
Step 149: 25456 + 172 = 25628
Step 150: 25628 + 172 = 25800
Step 151: 25800 + 172 = 25972
Step 152: 25972 + 172 = 26144
Step 153: 26144 + 172 = 26316
Step 154: 26316 + 172 = 26488
Step 155: 26488 + 172 = 26660
Step 156: 26660 + 172 = 26832
Step 157: 26832 + 172 = 27004
Step 158: 27004 + 172 = 27176
Step 159: 27176 + 172 = 27348
Step 160: 27348 + 172 = 27520
Step 161: 27520 + 172 = 27692
Step 162: 27692 + 172 = 27864
Step 163: 27864 + 172 = 28036
Step 164: 28036 + 172 = 28208
Step 165: 28208 + 172 = 28380
Step 166: 28380 + 172 = 28552
Step 167: 28552 + 172 = 28724
Step 168: 28724 + 172 = 28896
Step 169: 28896 + 172 = 29068
Step 170: 29068 + 172 = 29240
Step 171: 29240 + 172 = 29412
Step 172: 29412 + 172 = 29584
Step 173: 29584 + 172 = 29756
Step 174: 29756 + 172 = 29928
Step 175: 29928 + 172 = 30100
Step 176: 30100 + 172 = 30272
Step 177: 30272 + 172 = 30444
Step 178: 30444 + 172 = 30616
Step 179: 30616 + 172 = 30788
Step 180: 30788 + 172 = 30960
Step 181: 30960 + 172 = 31132
Step 182: 31132 + 172 = 31304
Step 183: 31304 + 172 = 31476
Step 184: 31476 + 172 = 31648
Step 185: 31648 + 172 = 31820
Step 186: 31820 + 172 = 31992
Step 187: 31992 + 172 = 32164
Step 188: 32164 + 172 = 32336
Step 189: 32336 + 172 = 32508
Step 190: 32508 + 172 = 32680
Step 191: 32680 + 172 = 32852
Step 192: 32852 + 172 = 33024
Step 193: 33024 + 172 = 33196
Step 194: 33196 + 172 = 33368
Step 195: 33368 + 172 = 33540
Step 196: 33540 + 172 = 33712
Step 197: 33712 + 172 = 33884
Step 198: 33884 + 172 = 34056
Step 199: 34056 + 172 = 34228
Step 200: 34228 + 172 = 34400
Step 201: 34400 + 172 = 34572
Step 202: 34572 + 172 = 34744
Step 203: 34744 + 172 = 34916
Step 204: 34916 + 172 = 35088
Step 205: 35088 + 172 = 35260
Step 206: 35260 + 172 = 35432
Step 207: 35432 + 172 = 35604
Step 208: 35604 + 172 = 35776
Step 209: 35776 + 172 = 35948
Step 210: 35948 + 172 = 36120
Step 211: 36120 + 172 = 36292
Step 212: 36292 + 172 = 36464
Step 213: 36464 + 172 = 36636
Step 214: 36636 + 172 = 36808
Step 215: 36808 + 172 = 36980
Step 216: 36980 + 172 = 37152
Step 217: 37152 + 172 = 37324
Step 218: 37324 + 172 = 37496
Step 219: 37496 + 172 = 37668
Step 220: 37668 + 172 = 37840
Step 221: 37840 + 172 = 38012
Step 222: 38012 + 172 = 38184
Step 223: 38184 + 172 = 38356
Step 224: 38356 + 172 = 38528
Step 225: 38528 + 172 = 38700
Step 226: 38700 + 172 = 38872
Step 227: 38872 + 172 = 39044
Step 228: 39044 + 172 = 39216
Step 229: 39216 + 172 = 39388
Step 230: 39388 + 172 = 39560
Step 231: 39560 + 172 = 39732
Step 232: 39732 + 172 = 39904
Step 233: 39904 + 172 = 40076
Step 234: 40076 + 172 = 40248
Step 235: 40248 + 172 = 40420
Step 236: 40420 + 172 = 40592
Step 237: 40592 + 172 = 40764
Step 238: 40764 + 172 = 40936
Step 239: 40936 + 172 = 41108
Step 240: 41108 + 172 = 41280
Step 241: 41280 + 172 = 41452
Step 242: 41452 + 172 = 41624
Step 243: 41624 + 172 = 41796
Step 244: 41796 + 172 = 41968
Step 245: 41968 + 172 = 42140
Step 246: 42140 + 172 = 42312
Step 247: 42312 + 172 = 42484
Step 248: 42484 + 172 = 42656
Step 249: 42656 + 172 = 42828
Step 250: 42828 + 172 = 43000
Step 251: 43000 + 172 = 43172
Step 252: 43172 + 172 = 43344
Step 253: 43344 + 172 = 43516
Step 254: 43516 + 172 = 43688
Step 255: 43688 + 172 = 43860
Step 256: 43860 + 172 = 44032
Step 257: 44032 + 172 = 44204
Step 258: 44204 + 172 = 44376
Step 259: 44376 + 172 = 44548
Step 260: 44548 + 172 = 44720
Step 261: 44720 + 172 = 44892
Step 262: 44892 + 172 = 45064
Step 263: 45064 + 172 = 45236
Step 264: 45236 + 172 = 45408
Step 265: 45408 + 172 = 45580
Step 266: 45580 + 172 = 45752
Step 267: 45752 + 172 = 45924
Step 268: 45924 + 172 = 46096
Step 269: 46096 + 172 = 46268
Step 270: 46268 + 172 = 46440
Step 271: 46440 + 172 = 46612
Step 272: 46612 + 172 = 46784
Step 273: 46784 + 172 = 46956
Step 274: 46956 + 172 = 47128
Step 275: 47128 + 172 = 47300
Step 276: 47300 + 172 = 47472
Step 277: 47472 + 172 = 47644
Step 278: 47644 + 172 = 47816
Step 279: 47816 + 172 = 47988
Step 280: 47988 + 172 = 48160
Step 281: 48160 + 172 = 48332
Step 282: 48332 + 172 = 48504
Step 283: 48504 + 172 = 48676
Step 284: 48676 + 172 = 48848
Step 285: 48848 + 172 = 49020
Step 286: 49020 + 172 = 49192
Step 287: 49192 + 172 = 49364
Step 288: 49364 + 172 = 49536
Step 289: 49536 + 172 = 49708
Step 290: 49708 + 172 = 49880
Step 291: 49880 + 172 = 50052
Step 292: 50052 + 172 = 50224
Step 293: 50224 + 172 = 50396
Step 294: 50396 + 172 = 50568
Step 295: 50568 + 172 = 50740
Step 296: 50740 + 172 = 50912
Step 297: 50912 + 172 = 51084
Step 298: 51084 + 172 = 51256
Step 299: 51256 + 172 = 51428
Step 300: 51428 + 172 = 51600
Step 301: 51600 + 172 = 51772
Step 302: 51772 + 172 = 51944
Step 303: 51944 + 172 = 52116
Step 304: 52116 + 172 = 52288
Step 305: 52288 + 172 = 52460
Step 306: 52460 + 172 = 52632
Step 307: 52632 + 172 = 52804
Step 308: 52804 + 172 = 52976
Step 309: 52976 + 172 = 53148
Step 310: 53148 + 172 = 53320
Step 311: 53320 + 172 = 53492
Step 312: 53492 + 172 = 53664
Step 313: 53664 + 172 = 53836
Step 314: 53836 + 172 = 54008
Step 315: 54008 + 172 = 54180
Step 316: 54180 + 172 = 54352
Step 317: 54352 + 172 = 54524
Step 318: 54524 + 172 = 54696
Step 319: 54696 + 172 = 54868
Step 320: 54868 + 172 = 55040
Step 321: 55040 + 172 = 55212
Step 322: 55212 + 172 = 55384
Step 323: 55384 + 172 = 55556
Step 324: 55556 + 172 = 55728
Step 325: 55728 + 172 = 55900
Step 326: 55900 + 172 = 56072
Step 327: 56072 + 172 = 56244
Step 328: 56244 + 172 = 56416

So, 172*328 = 56416