OK, let's work through this together. We're starting with 585 and we're going to multiply it by 404, which means we add 585 to itself 404 times.
Step 1: 0 + 585 = 585
Step 2: 585 + 585 = 1170
Step 3: 1170 + 585 = 1755
Step 4: 1755 + 585 = 2340
Step 5: 2340 + 585 = 2925
Step 6: 2925 + 585 = 3510
Step 7: 3510 + 585 = 4095
Step 8: 4095 + 585 = 4680
Step 9: 4680 + 585 = 5265
Step 10: 5265 + 585 = 5850
Step 11: 5850 + 585 = 6435
Step 12: 6435 + 585 = 7020
Step 13: 7020 + 585 = 7605
Step 14: 7605 + 585 = 8190
Step 15: 8190 + 585 = 8775
Step 16: 8775 + 585 = 9360
Step 17: 9360 + 585 = 9945
Step 18: 9945 + 585 = 10530
Step 19: 10530 + 585 = 11115
Step 20: 11115 + 585 = 11700
Step 21: 11700 + 585 = 12285
Step 22: 12285 + 585 = 12870
Step 23: 12870 + 585 = 13455
Step 24: 13455 + 585 = 14040
Step 25: 14040 + 585 = 14625
Step 26: 14625 + 585 = 15210
Step 27: 15210 + 585 = 15795
Step 28: 15795 + 585 = 16380
Step 29: 16380 + 585 = 16965
Step 30: 16965 + 585 = 17550
Step 31: 17550 + 585 = 18135
Step 32: 18135 + 585 = 18720
Step 33: 18720 + 585 = 19305
Step 34: 19305 + 585 = 19890
Step 35: 19890 + 585 = 20475
Step 36: 20475 + 585 = 21060
Step 37: 21060 + 585 = 21645
Step 38: 21645 + 585 = 22230
Step 39: 22230 + 585 = 22815
Step 40: 22815 + 585 = 23400
Step 41: 23400 + 585 = 23985
Step 42: 23985 + 585 = 24570
Step 43: 24570 + 585 = 25155
Step 44: 25155 + 585 = 25740
Step 45: 25740 + 585 = 26325
Step 46: 26325 + 585 = 26910
Step 47: 26910 + 585 = 27495
Step 48: 27495 + 585 = 28080
Step 49: 28080 + 585 = 28665
Step 50: 28665 + 585 = 29250
Step 51: 29250 + 585 = 29835
Step 52: 29835 + 585 = 30420
Step 53: 30420 + 585 = 31005
Step 54: 31005 + 585 = 31590
Step 55: 31590 + 585 = 32175
Step 56: 32175 + 585 = 32760
Step 57: 32760 + 585 = 33345
Step 58: 33345 + 585 = 33930
Step 59: 33930 + 585 = 34515
Step 60: 34515 + 585 = 35100
Step 61: 35100 + 585 = 35685
Step 62: 35685 + 585 = 36270
Step 63: 36270 + 585 = 36855
Step 64: 36855 + 585 = 37440
Step 65: 37440 + 585 = 38025
Step 66: 38025 + 585 = 38610
Step 67: 38610 + 585 = 39195
Step 68: 39195 + 585 = 39780
Step 69: 39780 + 585 = 40365
Step 70: 40365 + 585 = 40950
Step 71: 40950 + 585 = 41535
Step 72: 41535 + 585 = 42120
Step 73: 42120 + 585 = 42705
Step 74: 42705 + 585 = 43290
Step 75: 43290 + 585 = 43875
Step 76: 43875 + 585 = 44460
Step 77: 44460 + 585 = 45045
Step 78: 45045 + 585 = 45630
Step 79: 45630 + 585 = 46215
Step 80: 46215 + 585 = 46800
Step 81: 46800 + 585 = 47385
Step 82: 47385 + 585 = 47970
Step 83: 47970 + 585 = 48555
Step 84: 48555 + 585 = 49140
Step 85: 49140 + 585 = 49725
Step 86: 49725 + 585 = 50310
Step 87: 50310 + 585 = 50895
Step 88: 50895 + 585 = 51480
Step 89: 51480 + 585 = 52065
Step 90: 52065 + 585 = 52650
Step 91: 52650 + 585 = 53235
Step 92: 53235 + 585 = 53820
Step 93: 53820 + 585 = 54405
Step 94: 54405 + 585 = 54990
Step 95: 54990 + 585 = 55575
Step 96: 55575 + 585 = 56160
Step 97: 56160 + 585 = 56745
Step 98: 56745 + 585 = 57330
Step 99: 57330 + 585 = 57915
Step 100: 57915 + 585 = 58500
Step 101: 58500 + 585 = 59085
Step 102: 59085 + 585 = 59670
Step 103: 59670 + 585 = 60255
Step 104: 60255 + 585 = 60840
Step 105: 60840 + 585 = 61425
Step 106: 61425 + 585 = 62010
Step 107: 62010 + 585 = 62595
Step 108: 62595 + 585 = 63180
Step 109: 63180 + 585 = 63765
Step 110: 63765 + 585 = 64350
Step 111: 64350 + 585 = 64935
Step 112: 64935 + 585 = 65520
Step 113: 65520 + 585 = 66105
Step 114: 66105 + 585 = 66690
Step 115: 66690 + 585 = 67275
Step 116: 67275 + 585 = 67860
Step 117: 67860 + 585 = 68445
Step 118: 68445 + 585 = 69030
Step 119: 69030 + 585 = 69615
Step 120: 69615 + 585 = 70200
Step 121: 70200 + 585 = 70785
Step 122: 70785 + 585 = 71370
Step 123: 71370 + 585 = 71955
Step 124: 71955 + 585 = 72540
Step 125: 72540 + 585 = 73125
Step 126: 73125 + 585 = 73710
Step 127: 73710 + 585 = 74295
Step 128: 74295 + 585 = 74880
Step 129: 74880 + 585 = 75465
Step 130: 75465 + 585 = 76050
Step 131: 76050 + 585 = 76635
Step 132: 76635 + 585 = 77220
Step 133: 77220 + 585 = 77805
Step 134: 77805 + 585 = 78390
Step 135: 78390 + 585 = 78975
Step 136: 78975 + 585 = 79560
Step 137: 79560 + 585 = 80145
Step 138: 80145 + 585 = 80730
Step 139: 80730 + 585 = 81315
Step 140: 81315 + 585 = 81900
Step 141: 81900 + 585 = 82485
Step 142: 82485 + 585 = 83070
Step 143: 83070 + 585 = 83655
Step 144: 83655 + 585 = 84240
Step 145: 84240 + 585 = 84825
Step 146: 84825 + 585 = 85410
Step 147: 85410 + 585 = 85995
Step 148: 85995 + 585 = 86580
Step 149: 86580 + 585 = 87165
Step 150: 87165 + 585 = 87750
Step 151: 87750 + 585 = 88335
Step 152: 88335 + 585 = 88920
Step 153: 88920 + 585 = 89505
Step 154: 89505 + 585 = 90090
Step 155: 90090 + 585 = 90675
Step 156: 90675 + 585 = 91260
Step 157: 91260 + 585 = 91845
Step 158: 91845 + 585 = 92430
Step 159: 92430 + 585 = 93015
Step 160: 93015 + 585 = 93600
Step 161: 93600 + 585 = 94185
Step 162: 94185 + 585 = 94770
Step 163: 94770 + 585 = 95355
Step 164: 95355 + 585 = 95940
Step 165: 95940 + 585 = 96525
Step 166: 96525 + 585 = 97110
Step 167: 97110 + 585 = 97695
Step 168: 97695 + 585 = 98280
Step 169: 98280 + 585 = 98865
Step 170: 98865 + 585 = 99450
Step 171: 99450 + 585 = 100035
Step 172: 100035 + 585 = 100620
Step 173: 100620 + 585 = 101205
Step 174: 101205 + 585 = 101790
Step 175: 101790 + 585 = 102375
Step 176: 102375 + 585 = 102960
Step 177: 102960 + 585 = 103545
Step 178: 103545 + 585 = 104130
Step 179: 104130 + 585 = 104715
Step 180: 104715 + 585 = 105300
Step 181: 105300 + 585 = 105885
Step 182: 105885 + 585 = 106470
Step 183: 106470 + 585 = 107055
Step 184: 107055 + 585 = 107640
Step 185: 107640 + 585 = 108225
Step 186: 108225 + 585 = 108810
Step 187: 108810 + 585 = 109395
Step 188: 109395 + 585 = 109980
Step 189: 109980 + 585 = 110565
Step 190: 110565 + 585 = 111150
Step 191: 111150 + 585 = 111735
Step 192: 111735 + 585 = 112320
Step 193: 112320 + 585 = 112905
Step 194: 112905 + 585 = 113490
Step 195: 113490 + 585 = 114075
Step 196: 114075 + 585 = 114660
Step 197: 114660 + 585 = 115245
Step 198: 115245 + 585 = 115830
Step 199: 115830 + 585 = 116415
Step 200: 116415 + 585 = 117000
Step 201: 117000 + 585 = 117585
Step 202: 117585 + 585 = 118170
Step 203: 118170 + 585 = 118755
Step 204: 118755 + 585 = 119340
Step 205: 119340 + 585 = 119925
Step 206: 119925 + 585 = 120510
Step 207: 120510 + 585 = 121095
Step 208: 121095 + 585 = 121680
Step 209: 121680 + 585 = 122265
Step 210: 122265 + 585 = 122850
Step 211: 122850 + 585 = 123435
Step 212: 123435 + 585 = 124020
Step 213: 124020 + 585 = 124605
Step 214: 124605 + 585 = 125190
Step 215: 125190 + 585 = 125775
Step 216: 125775 + 585 = 126360
Step 217: 126360 + 585 = 126945
Step 218: 126945 + 585 = 127530
Step 219: 127530 + 585 = 128115
Step 220: 128115 + 585 = 128700
Step 221: 128700 + 585 = 129285
Step 222: 129285 + 585 = 129870
Step 223: 129870 + 585 = 130455
Step 224: 130455 + 585 = 131040
Step 225: 131040 + 585 = 131625
Step 226: 131625 + 585 = 132210
Step 227: 132210 + 585 = 132795
Step 228: 132795 + 585 = 133380
Step 229: 133380 + 585 = 133965
Step 230: 133965 + 585 = 134550
Step 231: 134550 + 585 = 135135
Step 232: 135135 + 585 = 135720
Step 233: 135720 + 585 = 136305
Step 234: 136305 + 585 = 136890
Step 235: 136890 + 585 = 137475
Step 236: 137475 + 585 = 138060
Step 237: 138060 + 585 = 138645
Step 238: 138645 + 585 = 139230
Step 239: 139230 + 585 = 139815
Step 240: 139815 + 585 = 140400
Step 241: 140400 + 585 = 140985
Step 242: 140985 + 585 = 141570
Step 243: 141570 + 585 = 142155
Step 244: 142155 + 585 = 142740
Step 245: 142740 + 585 = 143325
Step 246: 143325 + 585 = 143910
Step 247: 143910 + 585 = 144495
Step 248: 144495 + 585 = 145080
Step 249: 145080 + 585 = 145665
Step 250: 145665 + 585 = 146250
Step 251: 146250 + 585 = 146835
Step 252: 146835 + 585 = 147420
Step 253: 147420 + 585 = 148005
Step 254: 148005 + 585 = 148590
Step 255: 148590 + 585 = 149175
Step 256: 149175 + 585 = 149760
Step 257: 149760 + 585 = 150345
Step 258: 150345 + 585 = 150930
Step 259: 150930 + 585 = 151515
Step 260: 151515 + 585 = 152100
Step 261: 152100 + 585 = 152685
Step 262: 152685 + 585 = 153270
Step 263: 153270 + 585 = 153855
Step 264: 153855 + 585 = 154440
Step 265: 154440 + 585 = 155025
Step 266: 155025 + 585 = 155610
Step 267: 155610 + 585 = 156195
Step 268: 156195 + 585 = 156780
Step 269: 156780 + 585 = 157365
Step 270: 157365 + 585 = 157950
Step 271: 157950 + 585 = 158535
Step 272: 158535 + 585 = 159120
Step 273: 159120 + 585 = 159705
Step 274: 159705 + 585 = 160290
Step 275: 160290 + 585 = 160875
Step 276: 160875 + 585 = 161460
Step 277: 161460 + 585 = 162045
Step 278: 162045 + 585 = 162630
Step 279: 162630 + 585 = 163215
Step 280: 163215 + 585 = 163800
Step 281: 163800 + 585 = 164385
Step 282: 164385 + 585 = 164970
Step 283: 164970 + 585 = 165555
Step 284: 165555 + 585 = 166140
Step 285: 166140 + 585 = 166725
Step 286: 166725 + 585 = 167310
Step 287: 167310 + 585 = 167895
Step 288: 167895 + 585 = 168480
Step 289: 168480 + 585 = 169065
Step 290: 169065 + 585 = 169650
Step 291: 169650 + 585 = 170235
Step 292: 170235 + 585 = 170820
Step 293: 170820 + 585 = 171405
Step 294: 171405 + 585 = 171990
Step 295: 171990 + 585 = 172575
Step 296: 172575 + 585 = 173160
Step 297: 173160 + 585 = 173745
Step 298: 173745 + 585 = 174330
Step 299: 174330 + 585 = 174915
Step 300: 174915 + 585 = 175500
Step 301: 175500 + 585 = 176085
Step 302: 176085 + 585 = 176670
Step 303: 176670 + 585 = 177255
Step 304: 177255 + 585 = 177840
Step 305: 177840 + 585 = 178425
Step 306: 178425 + 585 = 179010
Step 307: 179010 + 585 = 179595
Step 308: 179595 + 585 = 180180
Step 309: 180180 + 585 = 180765
Step 310: 180765 + 585 = 181350
Step 311: 181350 + 585 = 181935
Step 312: 181935 + 585 = 182520
Step 313: 182520 + 585 = 183105
Step 314: 183105 + 585 = 183690
Step 315: 183690 + 585 = 184275
Step 316: 184275 + 585 = 184860
Step 317: 184860 + 585 = 185445
Step 318: 185445 + 585 = 186030
Step 319: 186030 + 585 = 186615
Step 320: 186615 + 585 = 187200
Step 321: 187200 + 585 = 187785
Step 322: 187785 + 585 = 188370
Step 323: 188370 + 585 = 188955
Step 324: 188955 + 585 = 189540
Step 325: 189540 + 585 = 190125
Step 326: 190125 + 585 = 190710
Step 327: 190710 + 585 = 191295
Step 328: 191295 + 585 = 191880
Step 329: 191880 + 585 = 192465
Step 330: 192465 + 585 = 193050
Step 331: 193050 + 585 = 193635
Step 332: 193635 + 585 = 194220
Step 333: 194220 + 585 = 194805
Step 334: 194805 + 585 = 195390
Step 335: 195390 + 585 = 195975
Step 336: 195975 + 585 = 196560
Step 337: 196560 + 585 = 197145
Step 338: 197145 + 585 = 197730
Step 339: 197730 + 585 = 198315
Step 340: 198315 + 585 = 198900
Step 341: 198900 + 585 = 199485
Step 342: 199485 + 585 = 200070
Step 343: 200070 + 585 = 200655
Step 344: 200655 + 585 = 201240
Step 345: 201240 + 585 = 201825
Step 346: 201825 + 585 = 202410
Step 347: 202410 + 585 = 202995
Step 348: 202995 + 585 = 203580
Step 349: 203580 + 585 = 204165
Step 350: 204165 + 585 = 204750
Step 351: 204750 + 585 = 205335
Step 352: 205335 + 585 = 205920
Step 353: 205920 + 585 = 206505
Step 354: 206505 + 585 = 207090
Step 355: 207090 + 585 = 207675
Step 356: 207675 + 585 = 208260
Step 357: 208260 + 585 = 208845
Step 358: 208845 + 585 = 209430
Step 359: 209430 + 585 = 210015
Step 360: 210015 + 585 = 210600
Step 361: 210600 + 585 = 211185
Step 362: 211185 + 585 = 211770
Step 363: 211770 + 585 = 212355
Step 364: 212355 + 585 = 212940
Step 365: 212940 + 585 = 213525
Step 366: 213525 + 585 = 214110
Step 367: 214110 + 585 = 214695
Step 368: 214695 + 585 = 215280
Step 369: 215280 + 585 = 215865
Step 370: 215865 + 585 = 216450
Step 371: 216450 + 585 = 217035
Step 372: 217035 + 585 = 217620
Step 373: 217620 + 585 = 218205
Step 374: 218205 + 585 = 218790
Step 375: 218790 + 585 = 219375
Step 376: 219375 + 585 = 219960
Step 377: 219960 + 585 = 220545
Step 378: 220545 + 585 = 221130
Step 379: 221130 + 585 = 221715
Step 380: 221715 + 585 = 222300
Step 381: 222300 + 585 = 222885
Step 382: 222885 + 585 = 223470
Step 383: 223470 + 585 = 224055
Step 384: 224055 + 585 = 224640
Step 385: 224640 + 585 = 225225
Step 386: 225225 + 585 = 225810
Step 387: 225810 + 585 = 226395
Step 388: 226395 + 585 = 226980
Step 389: 226980 + 585 = 227565
Step 390: 227565 + 585 = 228150
Step 391: 228150 + 585 = 228735
Step 392: 228735 + 585 = 229320
Step 393: 229320 + 585 = 229905
Step 394: 229905 + 585 = 230490
Step 395: 230490 + 585 = 231075
Step 396: 231075 + 585 = 231660
Step 397: 231660 + 585 = 232245
Step 398: 232245 + 585 = 232830
Step 399: 232830 + 585 = 233415
Step 400: 233415 + 585 = 234000
Step 401: 234000 + 585 = 234585
Step 402: 234585 + 585 = 235170
Step 403: 235170 + 585 = 235755
Step 404: 235755 + 585 = 236340

So, 585*404 = 236340