Let's get this math done. We have 628 and we're going to multiply it by 324. This is the same as taking 628 and adding it to itself 324 times.
Step 1: 0 + 628 = 628
Step 2: 628 + 628 = 1256
Step 3: 1256 + 628 = 1884
Step 4: 1884 + 628 = 2512
Step 5: 2512 + 628 = 3140
Step 6: 3140 + 628 = 3768
Step 7: 3768 + 628 = 4396
Step 8: 4396 + 628 = 5024
Step 9: 5024 + 628 = 5652
Step 10: 5652 + 628 = 6280
Step 11: 6280 + 628 = 6908
Step 12: 6908 + 628 = 7536
Step 13: 7536 + 628 = 8164
Step 14: 8164 + 628 = 8792
Step 15: 8792 + 628 = 9420
Step 16: 9420 + 628 = 10048
Step 17: 10048 + 628 = 10676
Step 18: 10676 + 628 = 11304
Step 19: 11304 + 628 = 11932
Step 20: 11932 + 628 = 12560
Step 21: 12560 + 628 = 13188
Step 22: 13188 + 628 = 13816
Step 23: 13816 + 628 = 14444
Step 24: 14444 + 628 = 15072
Step 25: 15072 + 628 = 15700
Step 26: 15700 + 628 = 16328
Step 27: 16328 + 628 = 16956
Step 28: 16956 + 628 = 17584
Step 29: 17584 + 628 = 18212
Step 30: 18212 + 628 = 18840
Step 31: 18840 + 628 = 19468
Step 32: 19468 + 628 = 20096
Step 33: 20096 + 628 = 20724
Step 34: 20724 + 628 = 21352
Step 35: 21352 + 628 = 21980
Step 36: 21980 + 628 = 22608
Step 37: 22608 + 628 = 23236
Step 38: 23236 + 628 = 23864
Step 39: 23864 + 628 = 24492
Step 40: 24492 + 628 = 25120
Step 41: 25120 + 628 = 25748
Step 42: 25748 + 628 = 26376
Step 43: 26376 + 628 = 27004
Step 44: 27004 + 628 = 27632
Step 45: 27632 + 628 = 28260
Step 46: 28260 + 628 = 28888
Step 47: 28888 + 628 = 29516
Step 48: 29516 + 628 = 30144
Step 49: 30144 + 628 = 30772
Step 50: 30772 + 628 = 31400
Step 51: 31400 + 628 = 32028
Step 52: 32028 + 628 = 32656
Step 53: 32656 + 628 = 33284
Step 54: 33284 + 628 = 33912
Step 55: 33912 + 628 = 34540
Step 56: 34540 + 628 = 35168
Step 57: 35168 + 628 = 35796
Step 58: 35796 + 628 = 36424
Step 59: 36424 + 628 = 37052
Step 60: 37052 + 628 = 37680
Step 61: 37680 + 628 = 38308
Step 62: 38308 + 628 = 38936
Step 63: 38936 + 628 = 39564
Step 64: 39564 + 628 = 40192
Step 65: 40192 + 628 = 40820
Step 66: 40820 + 628 = 41448
Step 67: 41448 + 628 = 42076
Step 68: 42076 + 628 = 42704
Step 69: 42704 + 628 = 43332
Step 70: 43332 + 628 = 43960
Step 71: 43960 + 628 = 44588
Step 72: 44588 + 628 = 45216
Step 73: 45216 + 628 = 45844
Step 74: 45844 + 628 = 46472
Step 75: 46472 + 628 = 47100
Step 76: 47100 + 628 = 47728
Step 77: 47728 + 628 = 48356
Step 78: 48356 + 628 = 48984
Step 79: 48984 + 628 = 49612
Step 80: 49612 + 628 = 50240
Step 81: 50240 + 628 = 50868
Step 82: 50868 + 628 = 51496
Step 83: 51496 + 628 = 52124
Step 84: 52124 + 628 = 52752
Step 85: 52752 + 628 = 53380
Step 86: 53380 + 628 = 54008
Step 87: 54008 + 628 = 54636
Step 88: 54636 + 628 = 55264
Step 89: 55264 + 628 = 55892
Step 90: 55892 + 628 = 56520
Step 91: 56520 + 628 = 57148
Step 92: 57148 + 628 = 57776
Step 93: 57776 + 628 = 58404
Step 94: 58404 + 628 = 59032
Step 95: 59032 + 628 = 59660
Step 96: 59660 + 628 = 60288
Step 97: 60288 + 628 = 60916
Step 98: 60916 + 628 = 61544
Step 99: 61544 + 628 = 62172
Step 100: 62172 + 628 = 62800
Step 101: 62800 + 628 = 63428
Step 102: 63428 + 628 = 64056
Step 103: 64056 + 628 = 64684
Step 104: 64684 + 628 = 65312
Step 105: 65312 + 628 = 65940
Step 106: 65940 + 628 = 66568
Step 107: 66568 + 628 = 67196
Step 108: 67196 + 628 = 67824
Step 109: 67824 + 628 = 68452
Step 110: 68452 + 628 = 69080
Step 111: 69080 + 628 = 69708
Step 112: 69708 + 628 = 70336
Step 113: 70336 + 628 = 70964
Step 114: 70964 + 628 = 71592
Step 115: 71592 + 628 = 72220
Step 116: 72220 + 628 = 72848
Step 117: 72848 + 628 = 73476
Step 118: 73476 + 628 = 74104
Step 119: 74104 + 628 = 74732
Step 120: 74732 + 628 = 75360
Step 121: 75360 + 628 = 75988
Step 122: 75988 + 628 = 76616
Step 123: 76616 + 628 = 77244
Step 124: 77244 + 628 = 77872
Step 125: 77872 + 628 = 78500
Step 126: 78500 + 628 = 79128
Step 127: 79128 + 628 = 79756
Step 128: 79756 + 628 = 80384
Step 129: 80384 + 628 = 81012
Step 130: 81012 + 628 = 81640
Step 131: 81640 + 628 = 82268
Step 132: 82268 + 628 = 82896
Step 133: 82896 + 628 = 83524
Step 134: 83524 + 628 = 84152
Step 135: 84152 + 628 = 84780
Step 136: 84780 + 628 = 85408
Step 137: 85408 + 628 = 86036
Step 138: 86036 + 628 = 86664
Step 139: 86664 + 628 = 87292
Step 140: 87292 + 628 = 87920
Step 141: 87920 + 628 = 88548
Step 142: 88548 + 628 = 89176
Step 143: 89176 + 628 = 89804
Step 144: 89804 + 628 = 90432
Step 145: 90432 + 628 = 91060
Step 146: 91060 + 628 = 91688
Step 147: 91688 + 628 = 92316
Step 148: 92316 + 628 = 92944
Step 149: 92944 + 628 = 93572
Step 150: 93572 + 628 = 94200
Step 151: 94200 + 628 = 94828
Step 152: 94828 + 628 = 95456
Step 153: 95456 + 628 = 96084
Step 154: 96084 + 628 = 96712
Step 155: 96712 + 628 = 97340
Step 156: 97340 + 628 = 97968
Step 157: 97968 + 628 = 98596
Step 158: 98596 + 628 = 99224
Step 159: 99224 + 628 = 99852
Step 160: 99852 + 628 = 100480
Step 161: 100480 + 628 = 101108
Step 162: 101108 + 628 = 101736
Step 163: 101736 + 628 = 102364
Step 164: 102364 + 628 = 102992
Step 165: 102992 + 628 = 103620
Step 166: 103620 + 628 = 104248
Step 167: 104248 + 628 = 104876
Step 168: 104876 + 628 = 105504
Step 169: 105504 + 628 = 106132
Step 170: 106132 + 628 = 106760
Step 171: 106760 + 628 = 107388
Step 172: 107388 + 628 = 108016
Step 173: 108016 + 628 = 108644
Step 174: 108644 + 628 = 109272
Step 175: 109272 + 628 = 109900
Step 176: 109900 + 628 = 110528
Step 177: 110528 + 628 = 111156
Step 178: 111156 + 628 = 111784
Step 179: 111784 + 628 = 112412
Step 180: 112412 + 628 = 113040
Step 181: 113040 + 628 = 113668
Step 182: 113668 + 628 = 114296
Step 183: 114296 + 628 = 114924
Step 184: 114924 + 628 = 115552
Step 185: 115552 + 628 = 116180
Step 186: 116180 + 628 = 116808
Step 187: 116808 + 628 = 117436
Step 188: 117436 + 628 = 118064
Step 189: 118064 + 628 = 118692
Step 190: 118692 + 628 = 119320
Step 191: 119320 + 628 = 119948
Step 192: 119948 + 628 = 120576
Step 193: 120576 + 628 = 121204
Step 194: 121204 + 628 = 121832
Step 195: 121832 + 628 = 122460
Step 196: 122460 + 628 = 123088
Step 197: 123088 + 628 = 123716
Step 198: 123716 + 628 = 124344
Step 199: 124344 + 628 = 124972
Step 200: 124972 + 628 = 125600
Step 201: 125600 + 628 = 126228
Step 202: 126228 + 628 = 126856
Step 203: 126856 + 628 = 127484
Step 204: 127484 + 628 = 128112
Step 205: 128112 + 628 = 128740
Step 206: 128740 + 628 = 129368
Step 207: 129368 + 628 = 129996
Step 208: 129996 + 628 = 130624
Step 209: 130624 + 628 = 131252
Step 210: 131252 + 628 = 131880
Step 211: 131880 + 628 = 132508
Step 212: 132508 + 628 = 133136
Step 213: 133136 + 628 = 133764
Step 214: 133764 + 628 = 134392
Step 215: 134392 + 628 = 135020
Step 216: 135020 + 628 = 135648
Step 217: 135648 + 628 = 136276
Step 218: 136276 + 628 = 136904
Step 219: 136904 + 628 = 137532
Step 220: 137532 + 628 = 138160
Step 221: 138160 + 628 = 138788
Step 222: 138788 + 628 = 139416
Step 223: 139416 + 628 = 140044
Step 224: 140044 + 628 = 140672
Step 225: 140672 + 628 = 141300
Step 226: 141300 + 628 = 141928
Step 227: 141928 + 628 = 142556
Step 228: 142556 + 628 = 143184
Step 229: 143184 + 628 = 143812
Step 230: 143812 + 628 = 144440
Step 231: 144440 + 628 = 145068
Step 232: 145068 + 628 = 145696
Step 233: 145696 + 628 = 146324
Step 234: 146324 + 628 = 146952
Step 235: 146952 + 628 = 147580
Step 236: 147580 + 628 = 148208
Step 237: 148208 + 628 = 148836
Step 238: 148836 + 628 = 149464
Step 239: 149464 + 628 = 150092
Step 240: 150092 + 628 = 150720
Step 241: 150720 + 628 = 151348
Step 242: 151348 + 628 = 151976
Step 243: 151976 + 628 = 152604
Step 244: 152604 + 628 = 153232
Step 245: 153232 + 628 = 153860
Step 246: 153860 + 628 = 154488
Step 247: 154488 + 628 = 155116
Step 248: 155116 + 628 = 155744
Step 249: 155744 + 628 = 156372
Step 250: 156372 + 628 = 157000
Step 251: 157000 + 628 = 157628
Step 252: 157628 + 628 = 158256
Step 253: 158256 + 628 = 158884
Step 254: 158884 + 628 = 159512
Step 255: 159512 + 628 = 160140
Step 256: 160140 + 628 = 160768
Step 257: 160768 + 628 = 161396
Step 258: 161396 + 628 = 162024
Step 259: 162024 + 628 = 162652
Step 260: 162652 + 628 = 163280
Step 261: 163280 + 628 = 163908
Step 262: 163908 + 628 = 164536
Step 263: 164536 + 628 = 165164
Step 264: 165164 + 628 = 165792
Step 265: 165792 + 628 = 166420
Step 266: 166420 + 628 = 167048
Step 267: 167048 + 628 = 167676
Step 268: 167676 + 628 = 168304
Step 269: 168304 + 628 = 168932
Step 270: 168932 + 628 = 169560
Step 271: 169560 + 628 = 170188
Step 272: 170188 + 628 = 170816
Step 273: 170816 + 628 = 171444
Step 274: 171444 + 628 = 172072
Step 275: 172072 + 628 = 172700
Step 276: 172700 + 628 = 173328
Step 277: 173328 + 628 = 173956
Step 278: 173956 + 628 = 174584
Step 279: 174584 + 628 = 175212
Step 280: 175212 + 628 = 175840
Step 281: 175840 + 628 = 176468
Step 282: 176468 + 628 = 177096
Step 283: 177096 + 628 = 177724
Step 284: 177724 + 628 = 178352
Step 285: 178352 + 628 = 178980
Step 286: 178980 + 628 = 179608
Step 287: 179608 + 628 = 180236
Step 288: 180236 + 628 = 180864
Step 289: 180864 + 628 = 181492
Step 290: 181492 + 628 = 182120
Step 291: 182120 + 628 = 182748
Step 292: 182748 + 628 = 183376
Step 293: 183376 + 628 = 184004
Step 294: 184004 + 628 = 184632
Step 295: 184632 + 628 = 185260
Step 296: 185260 + 628 = 185888
Step 297: 185888 + 628 = 186516
Step 298: 186516 + 628 = 187144
Step 299: 187144 + 628 = 187772
Step 300: 187772 + 628 = 188400
Step 301: 188400 + 628 = 189028
Step 302: 189028 + 628 = 189656
Step 303: 189656 + 628 = 190284
Step 304: 190284 + 628 = 190912
Step 305: 190912 + 628 = 191540
Step 306: 191540 + 628 = 192168
Step 307: 192168 + 628 = 192796
Step 308: 192796 + 628 = 193424
Step 309: 193424 + 628 = 194052
Step 310: 194052 + 628 = 194680
Step 311: 194680 + 628 = 195308
Step 312: 195308 + 628 = 195936
Step 313: 195936 + 628 = 196564
Step 314: 196564 + 628 = 197192
Step 315: 197192 + 628 = 197820
Step 316: 197820 + 628 = 198448
Step 317: 198448 + 628 = 199076
Step 318: 199076 + 628 = 199704
Step 319: 199704 + 628 = 200332
Step 320: 200332 + 628 = 200960
Step 321: 200960 + 628 = 201588
Step 322: 201588 + 628 = 202216
Step 323: 202216 + 628 = 202844
Step 324: 202844 + 628 = 203472

So, 628*324 = 203472