Let's roll up our sleeves and solve this. We have 452 and we're going to multiply it by 280, essentially adding 452 to itself 280 times.
Step 1: 0 + 452 = 452
Step 2: 452 + 452 = 904
Step 3: 904 + 452 = 1356
Step 4: 1356 + 452 = 1808
Step 5: 1808 + 452 = 2260
Step 6: 2260 + 452 = 2712
Step 7: 2712 + 452 = 3164
Step 8: 3164 + 452 = 3616
Step 9: 3616 + 452 = 4068
Step 10: 4068 + 452 = 4520
Step 11: 4520 + 452 = 4972
Step 12: 4972 + 452 = 5424
Step 13: 5424 + 452 = 5876
Step 14: 5876 + 452 = 6328
Step 15: 6328 + 452 = 6780
Step 16: 6780 + 452 = 7232
Step 17: 7232 + 452 = 7684
Step 18: 7684 + 452 = 8136
Step 19: 8136 + 452 = 8588
Step 20: 8588 + 452 = 9040
Step 21: 9040 + 452 = 9492
Step 22: 9492 + 452 = 9944
Step 23: 9944 + 452 = 10396
Step 24: 10396 + 452 = 10848
Step 25: 10848 + 452 = 11300
Step 26: 11300 + 452 = 11752
Step 27: 11752 + 452 = 12204
Step 28: 12204 + 452 = 12656
Step 29: 12656 + 452 = 13108
Step 30: 13108 + 452 = 13560
Step 31: 13560 + 452 = 14012
Step 32: 14012 + 452 = 14464
Step 33: 14464 + 452 = 14916
Step 34: 14916 + 452 = 15368
Step 35: 15368 + 452 = 15820
Step 36: 15820 + 452 = 16272
Step 37: 16272 + 452 = 16724
Step 38: 16724 + 452 = 17176
Step 39: 17176 + 452 = 17628
Step 40: 17628 + 452 = 18080
Step 41: 18080 + 452 = 18532
Step 42: 18532 + 452 = 18984
Step 43: 18984 + 452 = 19436
Step 44: 19436 + 452 = 19888
Step 45: 19888 + 452 = 20340
Step 46: 20340 + 452 = 20792
Step 47: 20792 + 452 = 21244
Step 48: 21244 + 452 = 21696
Step 49: 21696 + 452 = 22148
Step 50: 22148 + 452 = 22600
Step 51: 22600 + 452 = 23052
Step 52: 23052 + 452 = 23504
Step 53: 23504 + 452 = 23956
Step 54: 23956 + 452 = 24408
Step 55: 24408 + 452 = 24860
Step 56: 24860 + 452 = 25312
Step 57: 25312 + 452 = 25764
Step 58: 25764 + 452 = 26216
Step 59: 26216 + 452 = 26668
Step 60: 26668 + 452 = 27120
Step 61: 27120 + 452 = 27572
Step 62: 27572 + 452 = 28024
Step 63: 28024 + 452 = 28476
Step 64: 28476 + 452 = 28928
Step 65: 28928 + 452 = 29380
Step 66: 29380 + 452 = 29832
Step 67: 29832 + 452 = 30284
Step 68: 30284 + 452 = 30736
Step 69: 30736 + 452 = 31188
Step 70: 31188 + 452 = 31640
Step 71: 31640 + 452 = 32092
Step 72: 32092 + 452 = 32544
Step 73: 32544 + 452 = 32996
Step 74: 32996 + 452 = 33448
Step 75: 33448 + 452 = 33900
Step 76: 33900 + 452 = 34352
Step 77: 34352 + 452 = 34804
Step 78: 34804 + 452 = 35256
Step 79: 35256 + 452 = 35708
Step 80: 35708 + 452 = 36160
Step 81: 36160 + 452 = 36612
Step 82: 36612 + 452 = 37064
Step 83: 37064 + 452 = 37516
Step 84: 37516 + 452 = 37968
Step 85: 37968 + 452 = 38420
Step 86: 38420 + 452 = 38872
Step 87: 38872 + 452 = 39324
Step 88: 39324 + 452 = 39776
Step 89: 39776 + 452 = 40228
Step 90: 40228 + 452 = 40680
Step 91: 40680 + 452 = 41132
Step 92: 41132 + 452 = 41584
Step 93: 41584 + 452 = 42036
Step 94: 42036 + 452 = 42488
Step 95: 42488 + 452 = 42940
Step 96: 42940 + 452 = 43392
Step 97: 43392 + 452 = 43844
Step 98: 43844 + 452 = 44296
Step 99: 44296 + 452 = 44748
Step 100: 44748 + 452 = 45200
Step 101: 45200 + 452 = 45652
Step 102: 45652 + 452 = 46104
Step 103: 46104 + 452 = 46556
Step 104: 46556 + 452 = 47008
Step 105: 47008 + 452 = 47460
Step 106: 47460 + 452 = 47912
Step 107: 47912 + 452 = 48364
Step 108: 48364 + 452 = 48816
Step 109: 48816 + 452 = 49268
Step 110: 49268 + 452 = 49720
Step 111: 49720 + 452 = 50172
Step 112: 50172 + 452 = 50624
Step 113: 50624 + 452 = 51076
Step 114: 51076 + 452 = 51528
Step 115: 51528 + 452 = 51980
Step 116: 51980 + 452 = 52432
Step 117: 52432 + 452 = 52884
Step 118: 52884 + 452 = 53336
Step 119: 53336 + 452 = 53788
Step 120: 53788 + 452 = 54240
Step 121: 54240 + 452 = 54692
Step 122: 54692 + 452 = 55144
Step 123: 55144 + 452 = 55596
Step 124: 55596 + 452 = 56048
Step 125: 56048 + 452 = 56500
Step 126: 56500 + 452 = 56952
Step 127: 56952 + 452 = 57404
Step 128: 57404 + 452 = 57856
Step 129: 57856 + 452 = 58308
Step 130: 58308 + 452 = 58760
Step 131: 58760 + 452 = 59212
Step 132: 59212 + 452 = 59664
Step 133: 59664 + 452 = 60116
Step 134: 60116 + 452 = 60568
Step 135: 60568 + 452 = 61020
Step 136: 61020 + 452 = 61472
Step 137: 61472 + 452 = 61924
Step 138: 61924 + 452 = 62376
Step 139: 62376 + 452 = 62828
Step 140: 62828 + 452 = 63280
Step 141: 63280 + 452 = 63732
Step 142: 63732 + 452 = 64184
Step 143: 64184 + 452 = 64636
Step 144: 64636 + 452 = 65088
Step 145: 65088 + 452 = 65540
Step 146: 65540 + 452 = 65992
Step 147: 65992 + 452 = 66444
Step 148: 66444 + 452 = 66896
Step 149: 66896 + 452 = 67348
Step 150: 67348 + 452 = 67800
Step 151: 67800 + 452 = 68252
Step 152: 68252 + 452 = 68704
Step 153: 68704 + 452 = 69156
Step 154: 69156 + 452 = 69608
Step 155: 69608 + 452 = 70060
Step 156: 70060 + 452 = 70512
Step 157: 70512 + 452 = 70964
Step 158: 70964 + 452 = 71416
Step 159: 71416 + 452 = 71868
Step 160: 71868 + 452 = 72320
Step 161: 72320 + 452 = 72772
Step 162: 72772 + 452 = 73224
Step 163: 73224 + 452 = 73676
Step 164: 73676 + 452 = 74128
Step 165: 74128 + 452 = 74580
Step 166: 74580 + 452 = 75032
Step 167: 75032 + 452 = 75484
Step 168: 75484 + 452 = 75936
Step 169: 75936 + 452 = 76388
Step 170: 76388 + 452 = 76840
Step 171: 76840 + 452 = 77292
Step 172: 77292 + 452 = 77744
Step 173: 77744 + 452 = 78196
Step 174: 78196 + 452 = 78648
Step 175: 78648 + 452 = 79100
Step 176: 79100 + 452 = 79552
Step 177: 79552 + 452 = 80004
Step 178: 80004 + 452 = 80456
Step 179: 80456 + 452 = 80908
Step 180: 80908 + 452 = 81360
Step 181: 81360 + 452 = 81812
Step 182: 81812 + 452 = 82264
Step 183: 82264 + 452 = 82716
Step 184: 82716 + 452 = 83168
Step 185: 83168 + 452 = 83620
Step 186: 83620 + 452 = 84072
Step 187: 84072 + 452 = 84524
Step 188: 84524 + 452 = 84976
Step 189: 84976 + 452 = 85428
Step 190: 85428 + 452 = 85880
Step 191: 85880 + 452 = 86332
Step 192: 86332 + 452 = 86784
Step 193: 86784 + 452 = 87236
Step 194: 87236 + 452 = 87688
Step 195: 87688 + 452 = 88140
Step 196: 88140 + 452 = 88592
Step 197: 88592 + 452 = 89044
Step 198: 89044 + 452 = 89496
Step 199: 89496 + 452 = 89948
Step 200: 89948 + 452 = 90400
Step 201: 90400 + 452 = 90852
Step 202: 90852 + 452 = 91304
Step 203: 91304 + 452 = 91756
Step 204: 91756 + 452 = 92208
Step 205: 92208 + 452 = 92660
Step 206: 92660 + 452 = 93112
Step 207: 93112 + 452 = 93564
Step 208: 93564 + 452 = 94016
Step 209: 94016 + 452 = 94468
Step 210: 94468 + 452 = 94920
Step 211: 94920 + 452 = 95372
Step 212: 95372 + 452 = 95824
Step 213: 95824 + 452 = 96276
Step 214: 96276 + 452 = 96728
Step 215: 96728 + 452 = 97180
Step 216: 97180 + 452 = 97632
Step 217: 97632 + 452 = 98084
Step 218: 98084 + 452 = 98536
Step 219: 98536 + 452 = 98988
Step 220: 98988 + 452 = 99440
Step 221: 99440 + 452 = 99892
Step 222: 99892 + 452 = 100344
Step 223: 100344 + 452 = 100796
Step 224: 100796 + 452 = 101248
Step 225: 101248 + 452 = 101700
Step 226: 101700 + 452 = 102152
Step 227: 102152 + 452 = 102604
Step 228: 102604 + 452 = 103056
Step 229: 103056 + 452 = 103508
Step 230: 103508 + 452 = 103960
Step 231: 103960 + 452 = 104412
Step 232: 104412 + 452 = 104864
Step 233: 104864 + 452 = 105316
Step 234: 105316 + 452 = 105768
Step 235: 105768 + 452 = 106220
Step 236: 106220 + 452 = 106672
Step 237: 106672 + 452 = 107124
Step 238: 107124 + 452 = 107576
Step 239: 107576 + 452 = 108028
Step 240: 108028 + 452 = 108480
Step 241: 108480 + 452 = 108932
Step 242: 108932 + 452 = 109384
Step 243: 109384 + 452 = 109836
Step 244: 109836 + 452 = 110288
Step 245: 110288 + 452 = 110740
Step 246: 110740 + 452 = 111192
Step 247: 111192 + 452 = 111644
Step 248: 111644 + 452 = 112096
Step 249: 112096 + 452 = 112548
Step 250: 112548 + 452 = 113000
Step 251: 113000 + 452 = 113452
Step 252: 113452 + 452 = 113904
Step 253: 113904 + 452 = 114356
Step 254: 114356 + 452 = 114808
Step 255: 114808 + 452 = 115260
Step 256: 115260 + 452 = 115712
Step 257: 115712 + 452 = 116164
Step 258: 116164 + 452 = 116616
Step 259: 116616 + 452 = 117068
Step 260: 117068 + 452 = 117520
Step 261: 117520 + 452 = 117972
Step 262: 117972 + 452 = 118424
Step 263: 118424 + 452 = 118876
Step 264: 118876 + 452 = 119328
Step 265: 119328 + 452 = 119780
Step 266: 119780 + 452 = 120232
Step 267: 120232 + 452 = 120684
Step 268: 120684 + 452 = 121136
Step 269: 121136 + 452 = 121588
Step 270: 121588 + 452 = 122040
Step 271: 122040 + 452 = 122492
Step 272: 122492 + 452 = 122944
Step 273: 122944 + 452 = 123396
Step 274: 123396 + 452 = 123848
Step 275: 123848 + 452 = 124300
Step 276: 124300 + 452 = 124752
Step 277: 124752 + 452 = 125204
Step 278: 125204 + 452 = 125656
Step 279: 125656 + 452 = 126108
Step 280: 126108 + 452 = 126560

So, 452*280 = 126560