OK, let's crack this. We're given 412 and our task is to multiply it by 245. Essentially, we'll be adding 412 to itself 245 times.
Step 1: 0 + 412 = 412
Step 2: 412 + 412 = 824
Step 3: 824 + 412 = 1236
Step 4: 1236 + 412 = 1648
Step 5: 1648 + 412 = 2060
Step 6: 2060 + 412 = 2472
Step 7: 2472 + 412 = 2884
Step 8: 2884 + 412 = 3296
Step 9: 3296 + 412 = 3708
Step 10: 3708 + 412 = 4120
Step 11: 4120 + 412 = 4532
Step 12: 4532 + 412 = 4944
Step 13: 4944 + 412 = 5356
Step 14: 5356 + 412 = 5768
Step 15: 5768 + 412 = 6180
Step 16: 6180 + 412 = 6592
Step 17: 6592 + 412 = 7004
Step 18: 7004 + 412 = 7416
Step 19: 7416 + 412 = 7828
Step 20: 7828 + 412 = 8240
Step 21: 8240 + 412 = 8652
Step 22: 8652 + 412 = 9064
Step 23: 9064 + 412 = 9476
Step 24: 9476 + 412 = 9888
Step 25: 9888 + 412 = 10300
Step 26: 10300 + 412 = 10712
Step 27: 10712 + 412 = 11124
Step 28: 11124 + 412 = 11536
Step 29: 11536 + 412 = 11948
Step 30: 11948 + 412 = 12360
Step 31: 12360 + 412 = 12772
Step 32: 12772 + 412 = 13184
Step 33: 13184 + 412 = 13596
Step 34: 13596 + 412 = 14008
Step 35: 14008 + 412 = 14420
Step 36: 14420 + 412 = 14832
Step 37: 14832 + 412 = 15244
Step 38: 15244 + 412 = 15656
Step 39: 15656 + 412 = 16068
Step 40: 16068 + 412 = 16480
Step 41: 16480 + 412 = 16892
Step 42: 16892 + 412 = 17304
Step 43: 17304 + 412 = 17716
Step 44: 17716 + 412 = 18128
Step 45: 18128 + 412 = 18540
Step 46: 18540 + 412 = 18952
Step 47: 18952 + 412 = 19364
Step 48: 19364 + 412 = 19776
Step 49: 19776 + 412 = 20188
Step 50: 20188 + 412 = 20600
Step 51: 20600 + 412 = 21012
Step 52: 21012 + 412 = 21424
Step 53: 21424 + 412 = 21836
Step 54: 21836 + 412 = 22248
Step 55: 22248 + 412 = 22660
Step 56: 22660 + 412 = 23072
Step 57: 23072 + 412 = 23484
Step 58: 23484 + 412 = 23896
Step 59: 23896 + 412 = 24308
Step 60: 24308 + 412 = 24720
Step 61: 24720 + 412 = 25132
Step 62: 25132 + 412 = 25544
Step 63: 25544 + 412 = 25956
Step 64: 25956 + 412 = 26368
Step 65: 26368 + 412 = 26780
Step 66: 26780 + 412 = 27192
Step 67: 27192 + 412 = 27604
Step 68: 27604 + 412 = 28016
Step 69: 28016 + 412 = 28428
Step 70: 28428 + 412 = 28840
Step 71: 28840 + 412 = 29252
Step 72: 29252 + 412 = 29664
Step 73: 29664 + 412 = 30076
Step 74: 30076 + 412 = 30488
Step 75: 30488 + 412 = 30900
Step 76: 30900 + 412 = 31312
Step 77: 31312 + 412 = 31724
Step 78: 31724 + 412 = 32136
Step 79: 32136 + 412 = 32548
Step 80: 32548 + 412 = 32960
Step 81: 32960 + 412 = 33372
Step 82: 33372 + 412 = 33784
Step 83: 33784 + 412 = 34196
Step 84: 34196 + 412 = 34608
Step 85: 34608 + 412 = 35020
Step 86: 35020 + 412 = 35432
Step 87: 35432 + 412 = 35844
Step 88: 35844 + 412 = 36256
Step 89: 36256 + 412 = 36668
Step 90: 36668 + 412 = 37080
Step 91: 37080 + 412 = 37492
Step 92: 37492 + 412 = 37904
Step 93: 37904 + 412 = 38316
Step 94: 38316 + 412 = 38728
Step 95: 38728 + 412 = 39140
Step 96: 39140 + 412 = 39552
Step 97: 39552 + 412 = 39964
Step 98: 39964 + 412 = 40376
Step 99: 40376 + 412 = 40788
Step 100: 40788 + 412 = 41200
Step 101: 41200 + 412 = 41612
Step 102: 41612 + 412 = 42024
Step 103: 42024 + 412 = 42436
Step 104: 42436 + 412 = 42848
Step 105: 42848 + 412 = 43260
Step 106: 43260 + 412 = 43672
Step 107: 43672 + 412 = 44084
Step 108: 44084 + 412 = 44496
Step 109: 44496 + 412 = 44908
Step 110: 44908 + 412 = 45320
Step 111: 45320 + 412 = 45732
Step 112: 45732 + 412 = 46144
Step 113: 46144 + 412 = 46556
Step 114: 46556 + 412 = 46968
Step 115: 46968 + 412 = 47380
Step 116: 47380 + 412 = 47792
Step 117: 47792 + 412 = 48204
Step 118: 48204 + 412 = 48616
Step 119: 48616 + 412 = 49028
Step 120: 49028 + 412 = 49440
Step 121: 49440 + 412 = 49852
Step 122: 49852 + 412 = 50264
Step 123: 50264 + 412 = 50676
Step 124: 50676 + 412 = 51088
Step 125: 51088 + 412 = 51500
Step 126: 51500 + 412 = 51912
Step 127: 51912 + 412 = 52324
Step 128: 52324 + 412 = 52736
Step 129: 52736 + 412 = 53148
Step 130: 53148 + 412 = 53560
Step 131: 53560 + 412 = 53972
Step 132: 53972 + 412 = 54384
Step 133: 54384 + 412 = 54796
Step 134: 54796 + 412 = 55208
Step 135: 55208 + 412 = 55620
Step 136: 55620 + 412 = 56032
Step 137: 56032 + 412 = 56444
Step 138: 56444 + 412 = 56856
Step 139: 56856 + 412 = 57268
Step 140: 57268 + 412 = 57680
Step 141: 57680 + 412 = 58092
Step 142: 58092 + 412 = 58504
Step 143: 58504 + 412 = 58916
Step 144: 58916 + 412 = 59328
Step 145: 59328 + 412 = 59740
Step 146: 59740 + 412 = 60152
Step 147: 60152 + 412 = 60564
Step 148: 60564 + 412 = 60976
Step 149: 60976 + 412 = 61388
Step 150: 61388 + 412 = 61800
Step 151: 61800 + 412 = 62212
Step 152: 62212 + 412 = 62624
Step 153: 62624 + 412 = 63036
Step 154: 63036 + 412 = 63448
Step 155: 63448 + 412 = 63860
Step 156: 63860 + 412 = 64272
Step 157: 64272 + 412 = 64684
Step 158: 64684 + 412 = 65096
Step 159: 65096 + 412 = 65508
Step 160: 65508 + 412 = 65920
Step 161: 65920 + 412 = 66332
Step 162: 66332 + 412 = 66744
Step 163: 66744 + 412 = 67156
Step 164: 67156 + 412 = 67568
Step 165: 67568 + 412 = 67980
Step 166: 67980 + 412 = 68392
Step 167: 68392 + 412 = 68804
Step 168: 68804 + 412 = 69216
Step 169: 69216 + 412 = 69628
Step 170: 69628 + 412 = 70040
Step 171: 70040 + 412 = 70452
Step 172: 70452 + 412 = 70864
Step 173: 70864 + 412 = 71276
Step 174: 71276 + 412 = 71688
Step 175: 71688 + 412 = 72100
Step 176: 72100 + 412 = 72512
Step 177: 72512 + 412 = 72924
Step 178: 72924 + 412 = 73336
Step 179: 73336 + 412 = 73748
Step 180: 73748 + 412 = 74160
Step 181: 74160 + 412 = 74572
Step 182: 74572 + 412 = 74984
Step 183: 74984 + 412 = 75396
Step 184: 75396 + 412 = 75808
Step 185: 75808 + 412 = 76220
Step 186: 76220 + 412 = 76632
Step 187: 76632 + 412 = 77044
Step 188: 77044 + 412 = 77456
Step 189: 77456 + 412 = 77868
Step 190: 77868 + 412 = 78280
Step 191: 78280 + 412 = 78692
Step 192: 78692 + 412 = 79104
Step 193: 79104 + 412 = 79516
Step 194: 79516 + 412 = 79928
Step 195: 79928 + 412 = 80340
Step 196: 80340 + 412 = 80752
Step 197: 80752 + 412 = 81164
Step 198: 81164 + 412 = 81576
Step 199: 81576 + 412 = 81988
Step 200: 81988 + 412 = 82400
Step 201: 82400 + 412 = 82812
Step 202: 82812 + 412 = 83224
Step 203: 83224 + 412 = 83636
Step 204: 83636 + 412 = 84048
Step 205: 84048 + 412 = 84460
Step 206: 84460 + 412 = 84872
Step 207: 84872 + 412 = 85284
Step 208: 85284 + 412 = 85696
Step 209: 85696 + 412 = 86108
Step 210: 86108 + 412 = 86520
Step 211: 86520 + 412 = 86932
Step 212: 86932 + 412 = 87344
Step 213: 87344 + 412 = 87756
Step 214: 87756 + 412 = 88168
Step 215: 88168 + 412 = 88580
Step 216: 88580 + 412 = 88992
Step 217: 88992 + 412 = 89404
Step 218: 89404 + 412 = 89816
Step 219: 89816 + 412 = 90228
Step 220: 90228 + 412 = 90640
Step 221: 90640 + 412 = 91052
Step 222: 91052 + 412 = 91464
Step 223: 91464 + 412 = 91876
Step 224: 91876 + 412 = 92288
Step 225: 92288 + 412 = 92700
Step 226: 92700 + 412 = 93112
Step 227: 93112 + 412 = 93524
Step 228: 93524 + 412 = 93936
Step 229: 93936 + 412 = 94348
Step 230: 94348 + 412 = 94760
Step 231: 94760 + 412 = 95172
Step 232: 95172 + 412 = 95584
Step 233: 95584 + 412 = 95996
Step 234: 95996 + 412 = 96408
Step 235: 96408 + 412 = 96820
Step 236: 96820 + 412 = 97232
Step 237: 97232 + 412 = 97644
Step 238: 97644 + 412 = 98056
Step 239: 98056 + 412 = 98468
Step 240: 98468 + 412 = 98880
Step 241: 98880 + 412 = 99292
Step 242: 99292 + 412 = 99704
Step 243: 99704 + 412 = 100116
Step 244: 100116 + 412 = 100528
Step 245: 100528 + 412 = 100940

So, 412*245 = 100940