Sure thing! We've got 285 and we're gonna multiply it by 407. That's the same as adding 285 to itself 407 times.
Step 1: 0 + 285 = 285
Step 2: 285 + 285 = 570
Step 3: 570 + 285 = 855
Step 4: 855 + 285 = 1140
Step 5: 1140 + 285 = 1425
Step 6: 1425 + 285 = 1710
Step 7: 1710 + 285 = 1995
Step 8: 1995 + 285 = 2280
Step 9: 2280 + 285 = 2565
Step 10: 2565 + 285 = 2850
Step 11: 2850 + 285 = 3135
Step 12: 3135 + 285 = 3420
Step 13: 3420 + 285 = 3705
Step 14: 3705 + 285 = 3990
Step 15: 3990 + 285 = 4275
Step 16: 4275 + 285 = 4560
Step 17: 4560 + 285 = 4845
Step 18: 4845 + 285 = 5130
Step 19: 5130 + 285 = 5415
Step 20: 5415 + 285 = 5700
Step 21: 5700 + 285 = 5985
Step 22: 5985 + 285 = 6270
Step 23: 6270 + 285 = 6555
Step 24: 6555 + 285 = 6840
Step 25: 6840 + 285 = 7125
Step 26: 7125 + 285 = 7410
Step 27: 7410 + 285 = 7695
Step 28: 7695 + 285 = 7980
Step 29: 7980 + 285 = 8265
Step 30: 8265 + 285 = 8550
Step 31: 8550 + 285 = 8835
Step 32: 8835 + 285 = 9120
Step 33: 9120 + 285 = 9405
Step 34: 9405 + 285 = 9690
Step 35: 9690 + 285 = 9975
Step 36: 9975 + 285 = 10260
Step 37: 10260 + 285 = 10545
Step 38: 10545 + 285 = 10830
Step 39: 10830 + 285 = 11115
Step 40: 11115 + 285 = 11400
Step 41: 11400 + 285 = 11685
Step 42: 11685 + 285 = 11970
Step 43: 11970 + 285 = 12255
Step 44: 12255 + 285 = 12540
Step 45: 12540 + 285 = 12825
Step 46: 12825 + 285 = 13110
Step 47: 13110 + 285 = 13395
Step 48: 13395 + 285 = 13680
Step 49: 13680 + 285 = 13965
Step 50: 13965 + 285 = 14250
Step 51: 14250 + 285 = 14535
Step 52: 14535 + 285 = 14820
Step 53: 14820 + 285 = 15105
Step 54: 15105 + 285 = 15390
Step 55: 15390 + 285 = 15675
Step 56: 15675 + 285 = 15960
Step 57: 15960 + 285 = 16245
Step 58: 16245 + 285 = 16530
Step 59: 16530 + 285 = 16815
Step 60: 16815 + 285 = 17100
Step 61: 17100 + 285 = 17385
Step 62: 17385 + 285 = 17670
Step 63: 17670 + 285 = 17955
Step 64: 17955 + 285 = 18240
Step 65: 18240 + 285 = 18525
Step 66: 18525 + 285 = 18810
Step 67: 18810 + 285 = 19095
Step 68: 19095 + 285 = 19380
Step 69: 19380 + 285 = 19665
Step 70: 19665 + 285 = 19950
Step 71: 19950 + 285 = 20235
Step 72: 20235 + 285 = 20520
Step 73: 20520 + 285 = 20805
Step 74: 20805 + 285 = 21090
Step 75: 21090 + 285 = 21375
Step 76: 21375 + 285 = 21660
Step 77: 21660 + 285 = 21945
Step 78: 21945 + 285 = 22230
Step 79: 22230 + 285 = 22515
Step 80: 22515 + 285 = 22800
Step 81: 22800 + 285 = 23085
Step 82: 23085 + 285 = 23370
Step 83: 23370 + 285 = 23655
Step 84: 23655 + 285 = 23940
Step 85: 23940 + 285 = 24225
Step 86: 24225 + 285 = 24510
Step 87: 24510 + 285 = 24795
Step 88: 24795 + 285 = 25080
Step 89: 25080 + 285 = 25365
Step 90: 25365 + 285 = 25650
Step 91: 25650 + 285 = 25935
Step 92: 25935 + 285 = 26220
Step 93: 26220 + 285 = 26505
Step 94: 26505 + 285 = 26790
Step 95: 26790 + 285 = 27075
Step 96: 27075 + 285 = 27360
Step 97: 27360 + 285 = 27645
Step 98: 27645 + 285 = 27930
Step 99: 27930 + 285 = 28215
Step 100: 28215 + 285 = 28500
Step 101: 28500 + 285 = 28785
Step 102: 28785 + 285 = 29070
Step 103: 29070 + 285 = 29355
Step 104: 29355 + 285 = 29640
Step 105: 29640 + 285 = 29925
Step 106: 29925 + 285 = 30210
Step 107: 30210 + 285 = 30495
Step 108: 30495 + 285 = 30780
Step 109: 30780 + 285 = 31065
Step 110: 31065 + 285 = 31350
Step 111: 31350 + 285 = 31635
Step 112: 31635 + 285 = 31920
Step 113: 31920 + 285 = 32205
Step 114: 32205 + 285 = 32490
Step 115: 32490 + 285 = 32775
Step 116: 32775 + 285 = 33060
Step 117: 33060 + 285 = 33345
Step 118: 33345 + 285 = 33630
Step 119: 33630 + 285 = 33915
Step 120: 33915 + 285 = 34200
Step 121: 34200 + 285 = 34485
Step 122: 34485 + 285 = 34770
Step 123: 34770 + 285 = 35055
Step 124: 35055 + 285 = 35340
Step 125: 35340 + 285 = 35625
Step 126: 35625 + 285 = 35910
Step 127: 35910 + 285 = 36195
Step 128: 36195 + 285 = 36480
Step 129: 36480 + 285 = 36765
Step 130: 36765 + 285 = 37050
Step 131: 37050 + 285 = 37335
Step 132: 37335 + 285 = 37620
Step 133: 37620 + 285 = 37905
Step 134: 37905 + 285 = 38190
Step 135: 38190 + 285 = 38475
Step 136: 38475 + 285 = 38760
Step 137: 38760 + 285 = 39045
Step 138: 39045 + 285 = 39330
Step 139: 39330 + 285 = 39615
Step 140: 39615 + 285 = 39900
Step 141: 39900 + 285 = 40185
Step 142: 40185 + 285 = 40470
Step 143: 40470 + 285 = 40755
Step 144: 40755 + 285 = 41040
Step 145: 41040 + 285 = 41325
Step 146: 41325 + 285 = 41610
Step 147: 41610 + 285 = 41895
Step 148: 41895 + 285 = 42180
Step 149: 42180 + 285 = 42465
Step 150: 42465 + 285 = 42750
Step 151: 42750 + 285 = 43035
Step 152: 43035 + 285 = 43320
Step 153: 43320 + 285 = 43605
Step 154: 43605 + 285 = 43890
Step 155: 43890 + 285 = 44175
Step 156: 44175 + 285 = 44460
Step 157: 44460 + 285 = 44745
Step 158: 44745 + 285 = 45030
Step 159: 45030 + 285 = 45315
Step 160: 45315 + 285 = 45600
Step 161: 45600 + 285 = 45885
Step 162: 45885 + 285 = 46170
Step 163: 46170 + 285 = 46455
Step 164: 46455 + 285 = 46740
Step 165: 46740 + 285 = 47025
Step 166: 47025 + 285 = 47310
Step 167: 47310 + 285 = 47595
Step 168: 47595 + 285 = 47880
Step 169: 47880 + 285 = 48165
Step 170: 48165 + 285 = 48450
Step 171: 48450 + 285 = 48735
Step 172: 48735 + 285 = 49020
Step 173: 49020 + 285 = 49305
Step 174: 49305 + 285 = 49590
Step 175: 49590 + 285 = 49875
Step 176: 49875 + 285 = 50160
Step 177: 50160 + 285 = 50445
Step 178: 50445 + 285 = 50730
Step 179: 50730 + 285 = 51015
Step 180: 51015 + 285 = 51300
Step 181: 51300 + 285 = 51585
Step 182: 51585 + 285 = 51870
Step 183: 51870 + 285 = 52155
Step 184: 52155 + 285 = 52440
Step 185: 52440 + 285 = 52725
Step 186: 52725 + 285 = 53010
Step 187: 53010 + 285 = 53295
Step 188: 53295 + 285 = 53580
Step 189: 53580 + 285 = 53865
Step 190: 53865 + 285 = 54150
Step 191: 54150 + 285 = 54435
Step 192: 54435 + 285 = 54720
Step 193: 54720 + 285 = 55005
Step 194: 55005 + 285 = 55290
Step 195: 55290 + 285 = 55575
Step 196: 55575 + 285 = 55860
Step 197: 55860 + 285 = 56145
Step 198: 56145 + 285 = 56430
Step 199: 56430 + 285 = 56715
Step 200: 56715 + 285 = 57000
Step 201: 57000 + 285 = 57285
Step 202: 57285 + 285 = 57570
Step 203: 57570 + 285 = 57855
Step 204: 57855 + 285 = 58140
Step 205: 58140 + 285 = 58425
Step 206: 58425 + 285 = 58710
Step 207: 58710 + 285 = 58995
Step 208: 58995 + 285 = 59280
Step 209: 59280 + 285 = 59565
Step 210: 59565 + 285 = 59850
Step 211: 59850 + 285 = 60135
Step 212: 60135 + 285 = 60420
Step 213: 60420 + 285 = 60705
Step 214: 60705 + 285 = 60990
Step 215: 60990 + 285 = 61275
Step 216: 61275 + 285 = 61560
Step 217: 61560 + 285 = 61845
Step 218: 61845 + 285 = 62130
Step 219: 62130 + 285 = 62415
Step 220: 62415 + 285 = 62700
Step 221: 62700 + 285 = 62985
Step 222: 62985 + 285 = 63270
Step 223: 63270 + 285 = 63555
Step 224: 63555 + 285 = 63840
Step 225: 63840 + 285 = 64125
Step 226: 64125 + 285 = 64410
Step 227: 64410 + 285 = 64695
Step 228: 64695 + 285 = 64980
Step 229: 64980 + 285 = 65265
Step 230: 65265 + 285 = 65550
Step 231: 65550 + 285 = 65835
Step 232: 65835 + 285 = 66120
Step 233: 66120 + 285 = 66405
Step 234: 66405 + 285 = 66690
Step 235: 66690 + 285 = 66975
Step 236: 66975 + 285 = 67260
Step 237: 67260 + 285 = 67545
Step 238: 67545 + 285 = 67830
Step 239: 67830 + 285 = 68115
Step 240: 68115 + 285 = 68400
Step 241: 68400 + 285 = 68685
Step 242: 68685 + 285 = 68970
Step 243: 68970 + 285 = 69255
Step 244: 69255 + 285 = 69540
Step 245: 69540 + 285 = 69825
Step 246: 69825 + 285 = 70110
Step 247: 70110 + 285 = 70395
Step 248: 70395 + 285 = 70680
Step 249: 70680 + 285 = 70965
Step 250: 70965 + 285 = 71250
Step 251: 71250 + 285 = 71535
Step 252: 71535 + 285 = 71820
Step 253: 71820 + 285 = 72105
Step 254: 72105 + 285 = 72390
Step 255: 72390 + 285 = 72675
Step 256: 72675 + 285 = 72960
Step 257: 72960 + 285 = 73245
Step 258: 73245 + 285 = 73530
Step 259: 73530 + 285 = 73815
Step 260: 73815 + 285 = 74100
Step 261: 74100 + 285 = 74385
Step 262: 74385 + 285 = 74670
Step 263: 74670 + 285 = 74955
Step 264: 74955 + 285 = 75240
Step 265: 75240 + 285 = 75525
Step 266: 75525 + 285 = 75810
Step 267: 75810 + 285 = 76095
Step 268: 76095 + 285 = 76380
Step 269: 76380 + 285 = 76665
Step 270: 76665 + 285 = 76950
Step 271: 76950 + 285 = 77235
Step 272: 77235 + 285 = 77520
Step 273: 77520 + 285 = 77805
Step 274: 77805 + 285 = 78090
Step 275: 78090 + 285 = 78375
Step 276: 78375 + 285 = 78660
Step 277: 78660 + 285 = 78945
Step 278: 78945 + 285 = 79230
Step 279: 79230 + 285 = 79515
Step 280: 79515 + 285 = 79800
Step 281: 79800 + 285 = 80085
Step 282: 80085 + 285 = 80370
Step 283: 80370 + 285 = 80655
Step 284: 80655 + 285 = 80940
Step 285: 80940 + 285 = 81225
Step 286: 81225 + 285 = 81510
Step 287: 81510 + 285 = 81795
Step 288: 81795 + 285 = 82080
Step 289: 82080 + 285 = 82365
Step 290: 82365 + 285 = 82650
Step 291: 82650 + 285 = 82935
Step 292: 82935 + 285 = 83220
Step 293: 83220 + 285 = 83505
Step 294: 83505 + 285 = 83790
Step 295: 83790 + 285 = 84075
Step 296: 84075 + 285 = 84360
Step 297: 84360 + 285 = 84645
Step 298: 84645 + 285 = 84930
Step 299: 84930 + 285 = 85215
Step 300: 85215 + 285 = 85500
Step 301: 85500 + 285 = 85785
Step 302: 85785 + 285 = 86070
Step 303: 86070 + 285 = 86355
Step 304: 86355 + 285 = 86640
Step 305: 86640 + 285 = 86925
Step 306: 86925 + 285 = 87210
Step 307: 87210 + 285 = 87495
Step 308: 87495 + 285 = 87780
Step 309: 87780 + 285 = 88065
Step 310: 88065 + 285 = 88350
Step 311: 88350 + 285 = 88635
Step 312: 88635 + 285 = 88920
Step 313: 88920 + 285 = 89205
Step 314: 89205 + 285 = 89490
Step 315: 89490 + 285 = 89775
Step 316: 89775 + 285 = 90060
Step 317: 90060 + 285 = 90345
Step 318: 90345 + 285 = 90630
Step 319: 90630 + 285 = 90915
Step 320: 90915 + 285 = 91200
Step 321: 91200 + 285 = 91485
Step 322: 91485 + 285 = 91770
Step 323: 91770 + 285 = 92055
Step 324: 92055 + 285 = 92340
Step 325: 92340 + 285 = 92625
Step 326: 92625 + 285 = 92910
Step 327: 92910 + 285 = 93195
Step 328: 93195 + 285 = 93480
Step 329: 93480 + 285 = 93765
Step 330: 93765 + 285 = 94050
Step 331: 94050 + 285 = 94335
Step 332: 94335 + 285 = 94620
Step 333: 94620 + 285 = 94905
Step 334: 94905 + 285 = 95190
Step 335: 95190 + 285 = 95475
Step 336: 95475 + 285 = 95760
Step 337: 95760 + 285 = 96045
Step 338: 96045 + 285 = 96330
Step 339: 96330 + 285 = 96615
Step 340: 96615 + 285 = 96900
Step 341: 96900 + 285 = 97185
Step 342: 97185 + 285 = 97470
Step 343: 97470 + 285 = 97755
Step 344: 97755 + 285 = 98040
Step 345: 98040 + 285 = 98325
Step 346: 98325 + 285 = 98610
Step 347: 98610 + 285 = 98895
Step 348: 98895 + 285 = 99180
Step 349: 99180 + 285 = 99465
Step 350: 99465 + 285 = 99750
Step 351: 99750 + 285 = 100035
Step 352: 100035 + 285 = 100320
Step 353: 100320 + 285 = 100605
Step 354: 100605 + 285 = 100890
Step 355: 100890 + 285 = 101175
Step 356: 101175 + 285 = 101460
Step 357: 101460 + 285 = 101745
Step 358: 101745 + 285 = 102030
Step 359: 102030 + 285 = 102315
Step 360: 102315 + 285 = 102600
Step 361: 102600 + 285 = 102885
Step 362: 102885 + 285 = 103170
Step 363: 103170 + 285 = 103455
Step 364: 103455 + 285 = 103740
Step 365: 103740 + 285 = 104025
Step 366: 104025 + 285 = 104310
Step 367: 104310 + 285 = 104595
Step 368: 104595 + 285 = 104880
Step 369: 104880 + 285 = 105165
Step 370: 105165 + 285 = 105450
Step 371: 105450 + 285 = 105735
Step 372: 105735 + 285 = 106020
Step 373: 106020 + 285 = 106305
Step 374: 106305 + 285 = 106590
Step 375: 106590 + 285 = 106875
Step 376: 106875 + 285 = 107160
Step 377: 107160 + 285 = 107445
Step 378: 107445 + 285 = 107730
Step 379: 107730 + 285 = 108015
Step 380: 108015 + 285 = 108300
Step 381: 108300 + 285 = 108585
Step 382: 108585 + 285 = 108870
Step 383: 108870 + 285 = 109155
Step 384: 109155 + 285 = 109440
Step 385: 109440 + 285 = 109725
Step 386: 109725 + 285 = 110010
Step 387: 110010 + 285 = 110295
Step 388: 110295 + 285 = 110580
Step 389: 110580 + 285 = 110865
Step 390: 110865 + 285 = 111150
Step 391: 111150 + 285 = 111435
Step 392: 111435 + 285 = 111720
Step 393: 111720 + 285 = 112005
Step 394: 112005 + 285 = 112290
Step 395: 112290 + 285 = 112575
Step 396: 112575 + 285 = 112860
Step 397: 112860 + 285 = 113145
Step 398: 113145 + 285 = 113430
Step 399: 113430 + 285 = 113715
Step 400: 113715 + 285 = 114000
Step 401: 114000 + 285 = 114285
Step 402: 114285 + 285 = 114570
Step 403: 114570 + 285 = 114855
Step 404: 114855 + 285 = 115140
Step 405: 115140 + 285 = 115425
Step 406: 115425 + 285 = 115710
Step 407: 115710 + 285 = 115995

So, 285*407 = 115995