Let's get this math done. We have 397 and we're going to multiply it by 378. This is the same as taking 397 and adding it to itself 378 times.
Step 1: 0 + 397 = 397
Step 2: 397 + 397 = 794
Step 3: 794 + 397 = 1191
Step 4: 1191 + 397 = 1588
Step 5: 1588 + 397 = 1985
Step 6: 1985 + 397 = 2382
Step 7: 2382 + 397 = 2779
Step 8: 2779 + 397 = 3176
Step 9: 3176 + 397 = 3573
Step 10: 3573 + 397 = 3970
Step 11: 3970 + 397 = 4367
Step 12: 4367 + 397 = 4764
Step 13: 4764 + 397 = 5161
Step 14: 5161 + 397 = 5558
Step 15: 5558 + 397 = 5955
Step 16: 5955 + 397 = 6352
Step 17: 6352 + 397 = 6749
Step 18: 6749 + 397 = 7146
Step 19: 7146 + 397 = 7543
Step 20: 7543 + 397 = 7940
Step 21: 7940 + 397 = 8337
Step 22: 8337 + 397 = 8734
Step 23: 8734 + 397 = 9131
Step 24: 9131 + 397 = 9528
Step 25: 9528 + 397 = 9925
Step 26: 9925 + 397 = 10322
Step 27: 10322 + 397 = 10719
Step 28: 10719 + 397 = 11116
Step 29: 11116 + 397 = 11513
Step 30: 11513 + 397 = 11910
Step 31: 11910 + 397 = 12307
Step 32: 12307 + 397 = 12704
Step 33: 12704 + 397 = 13101
Step 34: 13101 + 397 = 13498
Step 35: 13498 + 397 = 13895
Step 36: 13895 + 397 = 14292
Step 37: 14292 + 397 = 14689
Step 38: 14689 + 397 = 15086
Step 39: 15086 + 397 = 15483
Step 40: 15483 + 397 = 15880
Step 41: 15880 + 397 = 16277
Step 42: 16277 + 397 = 16674
Step 43: 16674 + 397 = 17071
Step 44: 17071 + 397 = 17468
Step 45: 17468 + 397 = 17865
Step 46: 17865 + 397 = 18262
Step 47: 18262 + 397 = 18659
Step 48: 18659 + 397 = 19056
Step 49: 19056 + 397 = 19453
Step 50: 19453 + 397 = 19850
Step 51: 19850 + 397 = 20247
Step 52: 20247 + 397 = 20644
Step 53: 20644 + 397 = 21041
Step 54: 21041 + 397 = 21438
Step 55: 21438 + 397 = 21835
Step 56: 21835 + 397 = 22232
Step 57: 22232 + 397 = 22629
Step 58: 22629 + 397 = 23026
Step 59: 23026 + 397 = 23423
Step 60: 23423 + 397 = 23820
Step 61: 23820 + 397 = 24217
Step 62: 24217 + 397 = 24614
Step 63: 24614 + 397 = 25011
Step 64: 25011 + 397 = 25408
Step 65: 25408 + 397 = 25805
Step 66: 25805 + 397 = 26202
Step 67: 26202 + 397 = 26599
Step 68: 26599 + 397 = 26996
Step 69: 26996 + 397 = 27393
Step 70: 27393 + 397 = 27790
Step 71: 27790 + 397 = 28187
Step 72: 28187 + 397 = 28584
Step 73: 28584 + 397 = 28981
Step 74: 28981 + 397 = 29378
Step 75: 29378 + 397 = 29775
Step 76: 29775 + 397 = 30172
Step 77: 30172 + 397 = 30569
Step 78: 30569 + 397 = 30966
Step 79: 30966 + 397 = 31363
Step 80: 31363 + 397 = 31760
Step 81: 31760 + 397 = 32157
Step 82: 32157 + 397 = 32554
Step 83: 32554 + 397 = 32951
Step 84: 32951 + 397 = 33348
Step 85: 33348 + 397 = 33745
Step 86: 33745 + 397 = 34142
Step 87: 34142 + 397 = 34539
Step 88: 34539 + 397 = 34936
Step 89: 34936 + 397 = 35333
Step 90: 35333 + 397 = 35730
Step 91: 35730 + 397 = 36127
Step 92: 36127 + 397 = 36524
Step 93: 36524 + 397 = 36921
Step 94: 36921 + 397 = 37318
Step 95: 37318 + 397 = 37715
Step 96: 37715 + 397 = 38112
Step 97: 38112 + 397 = 38509
Step 98: 38509 + 397 = 38906
Step 99: 38906 + 397 = 39303
Step 100: 39303 + 397 = 39700
Step 101: 39700 + 397 = 40097
Step 102: 40097 + 397 = 40494
Step 103: 40494 + 397 = 40891
Step 104: 40891 + 397 = 41288
Step 105: 41288 + 397 = 41685
Step 106: 41685 + 397 = 42082
Step 107: 42082 + 397 = 42479
Step 108: 42479 + 397 = 42876
Step 109: 42876 + 397 = 43273
Step 110: 43273 + 397 = 43670
Step 111: 43670 + 397 = 44067
Step 112: 44067 + 397 = 44464
Step 113: 44464 + 397 = 44861
Step 114: 44861 + 397 = 45258
Step 115: 45258 + 397 = 45655
Step 116: 45655 + 397 = 46052
Step 117: 46052 + 397 = 46449
Step 118: 46449 + 397 = 46846
Step 119: 46846 + 397 = 47243
Step 120: 47243 + 397 = 47640
Step 121: 47640 + 397 = 48037
Step 122: 48037 + 397 = 48434
Step 123: 48434 + 397 = 48831
Step 124: 48831 + 397 = 49228
Step 125: 49228 + 397 = 49625
Step 126: 49625 + 397 = 50022
Step 127: 50022 + 397 = 50419
Step 128: 50419 + 397 = 50816
Step 129: 50816 + 397 = 51213
Step 130: 51213 + 397 = 51610
Step 131: 51610 + 397 = 52007
Step 132: 52007 + 397 = 52404
Step 133: 52404 + 397 = 52801
Step 134: 52801 + 397 = 53198
Step 135: 53198 + 397 = 53595
Step 136: 53595 + 397 = 53992
Step 137: 53992 + 397 = 54389
Step 138: 54389 + 397 = 54786
Step 139: 54786 + 397 = 55183
Step 140: 55183 + 397 = 55580
Step 141: 55580 + 397 = 55977
Step 142: 55977 + 397 = 56374
Step 143: 56374 + 397 = 56771
Step 144: 56771 + 397 = 57168
Step 145: 57168 + 397 = 57565
Step 146: 57565 + 397 = 57962
Step 147: 57962 + 397 = 58359
Step 148: 58359 + 397 = 58756
Step 149: 58756 + 397 = 59153
Step 150: 59153 + 397 = 59550
Step 151: 59550 + 397 = 59947
Step 152: 59947 + 397 = 60344
Step 153: 60344 + 397 = 60741
Step 154: 60741 + 397 = 61138
Step 155: 61138 + 397 = 61535
Step 156: 61535 + 397 = 61932
Step 157: 61932 + 397 = 62329
Step 158: 62329 + 397 = 62726
Step 159: 62726 + 397 = 63123
Step 160: 63123 + 397 = 63520
Step 161: 63520 + 397 = 63917
Step 162: 63917 + 397 = 64314
Step 163: 64314 + 397 = 64711
Step 164: 64711 + 397 = 65108
Step 165: 65108 + 397 = 65505
Step 166: 65505 + 397 = 65902
Step 167: 65902 + 397 = 66299
Step 168: 66299 + 397 = 66696
Step 169: 66696 + 397 = 67093
Step 170: 67093 + 397 = 67490
Step 171: 67490 + 397 = 67887
Step 172: 67887 + 397 = 68284
Step 173: 68284 + 397 = 68681
Step 174: 68681 + 397 = 69078
Step 175: 69078 + 397 = 69475
Step 176: 69475 + 397 = 69872
Step 177: 69872 + 397 = 70269
Step 178: 70269 + 397 = 70666
Step 179: 70666 + 397 = 71063
Step 180: 71063 + 397 = 71460
Step 181: 71460 + 397 = 71857
Step 182: 71857 + 397 = 72254
Step 183: 72254 + 397 = 72651
Step 184: 72651 + 397 = 73048
Step 185: 73048 + 397 = 73445
Step 186: 73445 + 397 = 73842
Step 187: 73842 + 397 = 74239
Step 188: 74239 + 397 = 74636
Step 189: 74636 + 397 = 75033
Step 190: 75033 + 397 = 75430
Step 191: 75430 + 397 = 75827
Step 192: 75827 + 397 = 76224
Step 193: 76224 + 397 = 76621
Step 194: 76621 + 397 = 77018
Step 195: 77018 + 397 = 77415
Step 196: 77415 + 397 = 77812
Step 197: 77812 + 397 = 78209
Step 198: 78209 + 397 = 78606
Step 199: 78606 + 397 = 79003
Step 200: 79003 + 397 = 79400
Step 201: 79400 + 397 = 79797
Step 202: 79797 + 397 = 80194
Step 203: 80194 + 397 = 80591
Step 204: 80591 + 397 = 80988
Step 205: 80988 + 397 = 81385
Step 206: 81385 + 397 = 81782
Step 207: 81782 + 397 = 82179
Step 208: 82179 + 397 = 82576
Step 209: 82576 + 397 = 82973
Step 210: 82973 + 397 = 83370
Step 211: 83370 + 397 = 83767
Step 212: 83767 + 397 = 84164
Step 213: 84164 + 397 = 84561
Step 214: 84561 + 397 = 84958
Step 215: 84958 + 397 = 85355
Step 216: 85355 + 397 = 85752
Step 217: 85752 + 397 = 86149
Step 218: 86149 + 397 = 86546
Step 219: 86546 + 397 = 86943
Step 220: 86943 + 397 = 87340
Step 221: 87340 + 397 = 87737
Step 222: 87737 + 397 = 88134
Step 223: 88134 + 397 = 88531
Step 224: 88531 + 397 = 88928
Step 225: 88928 + 397 = 89325
Step 226: 89325 + 397 = 89722
Step 227: 89722 + 397 = 90119
Step 228: 90119 + 397 = 90516
Step 229: 90516 + 397 = 90913
Step 230: 90913 + 397 = 91310
Step 231: 91310 + 397 = 91707
Step 232: 91707 + 397 = 92104
Step 233: 92104 + 397 = 92501
Step 234: 92501 + 397 = 92898
Step 235: 92898 + 397 = 93295
Step 236: 93295 + 397 = 93692
Step 237: 93692 + 397 = 94089
Step 238: 94089 + 397 = 94486
Step 239: 94486 + 397 = 94883
Step 240: 94883 + 397 = 95280
Step 241: 95280 + 397 = 95677
Step 242: 95677 + 397 = 96074
Step 243: 96074 + 397 = 96471
Step 244: 96471 + 397 = 96868
Step 245: 96868 + 397 = 97265
Step 246: 97265 + 397 = 97662
Step 247: 97662 + 397 = 98059
Step 248: 98059 + 397 = 98456
Step 249: 98456 + 397 = 98853
Step 250: 98853 + 397 = 99250
Step 251: 99250 + 397 = 99647
Step 252: 99647 + 397 = 100044
Step 253: 100044 + 397 = 100441
Step 254: 100441 + 397 = 100838
Step 255: 100838 + 397 = 101235
Step 256: 101235 + 397 = 101632
Step 257: 101632 + 397 = 102029
Step 258: 102029 + 397 = 102426
Step 259: 102426 + 397 = 102823
Step 260: 102823 + 397 = 103220
Step 261: 103220 + 397 = 103617
Step 262: 103617 + 397 = 104014
Step 263: 104014 + 397 = 104411
Step 264: 104411 + 397 = 104808
Step 265: 104808 + 397 = 105205
Step 266: 105205 + 397 = 105602
Step 267: 105602 + 397 = 105999
Step 268: 105999 + 397 = 106396
Step 269: 106396 + 397 = 106793
Step 270: 106793 + 397 = 107190
Step 271: 107190 + 397 = 107587
Step 272: 107587 + 397 = 107984
Step 273: 107984 + 397 = 108381
Step 274: 108381 + 397 = 108778
Step 275: 108778 + 397 = 109175
Step 276: 109175 + 397 = 109572
Step 277: 109572 + 397 = 109969
Step 278: 109969 + 397 = 110366
Step 279: 110366 + 397 = 110763
Step 280: 110763 + 397 = 111160
Step 281: 111160 + 397 = 111557
Step 282: 111557 + 397 = 111954
Step 283: 111954 + 397 = 112351
Step 284: 112351 + 397 = 112748
Step 285: 112748 + 397 = 113145
Step 286: 113145 + 397 = 113542
Step 287: 113542 + 397 = 113939
Step 288: 113939 + 397 = 114336
Step 289: 114336 + 397 = 114733
Step 290: 114733 + 397 = 115130
Step 291: 115130 + 397 = 115527
Step 292: 115527 + 397 = 115924
Step 293: 115924 + 397 = 116321
Step 294: 116321 + 397 = 116718
Step 295: 116718 + 397 = 117115
Step 296: 117115 + 397 = 117512
Step 297: 117512 + 397 = 117909
Step 298: 117909 + 397 = 118306
Step 299: 118306 + 397 = 118703
Step 300: 118703 + 397 = 119100
Step 301: 119100 + 397 = 119497
Step 302: 119497 + 397 = 119894
Step 303: 119894 + 397 = 120291
Step 304: 120291 + 397 = 120688
Step 305: 120688 + 397 = 121085
Step 306: 121085 + 397 = 121482
Step 307: 121482 + 397 = 121879
Step 308: 121879 + 397 = 122276
Step 309: 122276 + 397 = 122673
Step 310: 122673 + 397 = 123070
Step 311: 123070 + 397 = 123467
Step 312: 123467 + 397 = 123864
Step 313: 123864 + 397 = 124261
Step 314: 124261 + 397 = 124658
Step 315: 124658 + 397 = 125055
Step 316: 125055 + 397 = 125452
Step 317: 125452 + 397 = 125849
Step 318: 125849 + 397 = 126246
Step 319: 126246 + 397 = 126643
Step 320: 126643 + 397 = 127040
Step 321: 127040 + 397 = 127437
Step 322: 127437 + 397 = 127834
Step 323: 127834 + 397 = 128231
Step 324: 128231 + 397 = 128628
Step 325: 128628 + 397 = 129025
Step 326: 129025 + 397 = 129422
Step 327: 129422 + 397 = 129819
Step 328: 129819 + 397 = 130216
Step 329: 130216 + 397 = 130613
Step 330: 130613 + 397 = 131010
Step 331: 131010 + 397 = 131407
Step 332: 131407 + 397 = 131804
Step 333: 131804 + 397 = 132201
Step 334: 132201 + 397 = 132598
Step 335: 132598 + 397 = 132995
Step 336: 132995 + 397 = 133392
Step 337: 133392 + 397 = 133789
Step 338: 133789 + 397 = 134186
Step 339: 134186 + 397 = 134583
Step 340: 134583 + 397 = 134980
Step 341: 134980 + 397 = 135377
Step 342: 135377 + 397 = 135774
Step 343: 135774 + 397 = 136171
Step 344: 136171 + 397 = 136568
Step 345: 136568 + 397 = 136965
Step 346: 136965 + 397 = 137362
Step 347: 137362 + 397 = 137759
Step 348: 137759 + 397 = 138156
Step 349: 138156 + 397 = 138553
Step 350: 138553 + 397 = 138950
Step 351: 138950 + 397 = 139347
Step 352: 139347 + 397 = 139744
Step 353: 139744 + 397 = 140141
Step 354: 140141 + 397 = 140538
Step 355: 140538 + 397 = 140935
Step 356: 140935 + 397 = 141332
Step 357: 141332 + 397 = 141729
Step 358: 141729 + 397 = 142126
Step 359: 142126 + 397 = 142523
Step 360: 142523 + 397 = 142920
Step 361: 142920 + 397 = 143317
Step 362: 143317 + 397 = 143714
Step 363: 143714 + 397 = 144111
Step 364: 144111 + 397 = 144508
Step 365: 144508 + 397 = 144905
Step 366: 144905 + 397 = 145302
Step 367: 145302 + 397 = 145699
Step 368: 145699 + 397 = 146096
Step 369: 146096 + 397 = 146493
Step 370: 146493 + 397 = 146890
Step 371: 146890 + 397 = 147287
Step 372: 147287 + 397 = 147684
Step 373: 147684 + 397 = 148081
Step 374: 148081 + 397 = 148478
Step 375: 148478 + 397 = 148875
Step 376: 148875 + 397 = 149272
Step 377: 149272 + 397 = 149669
Step 378: 149669 + 397 = 150066

So, 397*378 = 150066