Alright, let's solve this math problem step by step. First, we have the number 810. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 424. So, we're going to take the number 810 and add it to itself 424 times.
Step 1: 0 + 810 = 810
Step 2: 810 + 810 = 1620
Step 3: 1620 + 810 = 2430
Step 4: 2430 + 810 = 3240
Step 5: 3240 + 810 = 4050
Step 6: 4050 + 810 = 4860
Step 7: 4860 + 810 = 5670
Step 8: 5670 + 810 = 6480
Step 9: 6480 + 810 = 7290
Step 10: 7290 + 810 = 8100
Step 11: 8100 + 810 = 8910
Step 12: 8910 + 810 = 9720
Step 13: 9720 + 810 = 10530
Step 14: 10530 + 810 = 11340
Step 15: 11340 + 810 = 12150
Step 16: 12150 + 810 = 12960
Step 17: 12960 + 810 = 13770
Step 18: 13770 + 810 = 14580
Step 19: 14580 + 810 = 15390
Step 20: 15390 + 810 = 16200
Step 21: 16200 + 810 = 17010
Step 22: 17010 + 810 = 17820
Step 23: 17820 + 810 = 18630
Step 24: 18630 + 810 = 19440
Step 25: 19440 + 810 = 20250
Step 26: 20250 + 810 = 21060
Step 27: 21060 + 810 = 21870
Step 28: 21870 + 810 = 22680
Step 29: 22680 + 810 = 23490
Step 30: 23490 + 810 = 24300
Step 31: 24300 + 810 = 25110
Step 32: 25110 + 810 = 25920
Step 33: 25920 + 810 = 26730
Step 34: 26730 + 810 = 27540
Step 35: 27540 + 810 = 28350
Step 36: 28350 + 810 = 29160
Step 37: 29160 + 810 = 29970
Step 38: 29970 + 810 = 30780
Step 39: 30780 + 810 = 31590
Step 40: 31590 + 810 = 32400
Step 41: 32400 + 810 = 33210
Step 42: 33210 + 810 = 34020
Step 43: 34020 + 810 = 34830
Step 44: 34830 + 810 = 35640
Step 45: 35640 + 810 = 36450
Step 46: 36450 + 810 = 37260
Step 47: 37260 + 810 = 38070
Step 48: 38070 + 810 = 38880
Step 49: 38880 + 810 = 39690
Step 50: 39690 + 810 = 40500
Step 51: 40500 + 810 = 41310
Step 52: 41310 + 810 = 42120
Step 53: 42120 + 810 = 42930
Step 54: 42930 + 810 = 43740
Step 55: 43740 + 810 = 44550
Step 56: 44550 + 810 = 45360
Step 57: 45360 + 810 = 46170
Step 58: 46170 + 810 = 46980
Step 59: 46980 + 810 = 47790
Step 60: 47790 + 810 = 48600
Step 61: 48600 + 810 = 49410
Step 62: 49410 + 810 = 50220
Step 63: 50220 + 810 = 51030
Step 64: 51030 + 810 = 51840
Step 65: 51840 + 810 = 52650
Step 66: 52650 + 810 = 53460
Step 67: 53460 + 810 = 54270
Step 68: 54270 + 810 = 55080
Step 69: 55080 + 810 = 55890
Step 70: 55890 + 810 = 56700
Step 71: 56700 + 810 = 57510
Step 72: 57510 + 810 = 58320
Step 73: 58320 + 810 = 59130
Step 74: 59130 + 810 = 59940
Step 75: 59940 + 810 = 60750
Step 76: 60750 + 810 = 61560
Step 77: 61560 + 810 = 62370
Step 78: 62370 + 810 = 63180
Step 79: 63180 + 810 = 63990
Step 80: 63990 + 810 = 64800
Step 81: 64800 + 810 = 65610
Step 82: 65610 + 810 = 66420
Step 83: 66420 + 810 = 67230
Step 84: 67230 + 810 = 68040
Step 85: 68040 + 810 = 68850
Step 86: 68850 + 810 = 69660
Step 87: 69660 + 810 = 70470
Step 88: 70470 + 810 = 71280
Step 89: 71280 + 810 = 72090
Step 90: 72090 + 810 = 72900
Step 91: 72900 + 810 = 73710
Step 92: 73710 + 810 = 74520
Step 93: 74520 + 810 = 75330
Step 94: 75330 + 810 = 76140
Step 95: 76140 + 810 = 76950
Step 96: 76950 + 810 = 77760
Step 97: 77760 + 810 = 78570
Step 98: 78570 + 810 = 79380
Step 99: 79380 + 810 = 80190
Step 100: 80190 + 810 = 81000
Step 101: 81000 + 810 = 81810
Step 102: 81810 + 810 = 82620
Step 103: 82620 + 810 = 83430
Step 104: 83430 + 810 = 84240
Step 105: 84240 + 810 = 85050
Step 106: 85050 + 810 = 85860
Step 107: 85860 + 810 = 86670
Step 108: 86670 + 810 = 87480
Step 109: 87480 + 810 = 88290
Step 110: 88290 + 810 = 89100
Step 111: 89100 + 810 = 89910
Step 112: 89910 + 810 = 90720
Step 113: 90720 + 810 = 91530
Step 114: 91530 + 810 = 92340
Step 115: 92340 + 810 = 93150
Step 116: 93150 + 810 = 93960
Step 117: 93960 + 810 = 94770
Step 118: 94770 + 810 = 95580
Step 119: 95580 + 810 = 96390
Step 120: 96390 + 810 = 97200
Step 121: 97200 + 810 = 98010
Step 122: 98010 + 810 = 98820
Step 123: 98820 + 810 = 99630
Step 124: 99630 + 810 = 100440
Step 125: 100440 + 810 = 101250
Step 126: 101250 + 810 = 102060
Step 127: 102060 + 810 = 102870
Step 128: 102870 + 810 = 103680
Step 129: 103680 + 810 = 104490
Step 130: 104490 + 810 = 105300
Step 131: 105300 + 810 = 106110
Step 132: 106110 + 810 = 106920
Step 133: 106920 + 810 = 107730
Step 134: 107730 + 810 = 108540
Step 135: 108540 + 810 = 109350
Step 136: 109350 + 810 = 110160
Step 137: 110160 + 810 = 110970
Step 138: 110970 + 810 = 111780
Step 139: 111780 + 810 = 112590
Step 140: 112590 + 810 = 113400
Step 141: 113400 + 810 = 114210
Step 142: 114210 + 810 = 115020
Step 143: 115020 + 810 = 115830
Step 144: 115830 + 810 = 116640
Step 145: 116640 + 810 = 117450
Step 146: 117450 + 810 = 118260
Step 147: 118260 + 810 = 119070
Step 148: 119070 + 810 = 119880
Step 149: 119880 + 810 = 120690
Step 150: 120690 + 810 = 121500
Step 151: 121500 + 810 = 122310
Step 152: 122310 + 810 = 123120
Step 153: 123120 + 810 = 123930
Step 154: 123930 + 810 = 124740
Step 155: 124740 + 810 = 125550
Step 156: 125550 + 810 = 126360
Step 157: 126360 + 810 = 127170
Step 158: 127170 + 810 = 127980
Step 159: 127980 + 810 = 128790
Step 160: 128790 + 810 = 129600
Step 161: 129600 + 810 = 130410
Step 162: 130410 + 810 = 131220
Step 163: 131220 + 810 = 132030
Step 164: 132030 + 810 = 132840
Step 165: 132840 + 810 = 133650
Step 166: 133650 + 810 = 134460
Step 167: 134460 + 810 = 135270
Step 168: 135270 + 810 = 136080
Step 169: 136080 + 810 = 136890
Step 170: 136890 + 810 = 137700
Step 171: 137700 + 810 = 138510
Step 172: 138510 + 810 = 139320
Step 173: 139320 + 810 = 140130
Step 174: 140130 + 810 = 140940
Step 175: 140940 + 810 = 141750
Step 176: 141750 + 810 = 142560
Step 177: 142560 + 810 = 143370
Step 178: 143370 + 810 = 144180
Step 179: 144180 + 810 = 144990
Step 180: 144990 + 810 = 145800
Step 181: 145800 + 810 = 146610
Step 182: 146610 + 810 = 147420
Step 183: 147420 + 810 = 148230
Step 184: 148230 + 810 = 149040
Step 185: 149040 + 810 = 149850
Step 186: 149850 + 810 = 150660
Step 187: 150660 + 810 = 151470
Step 188: 151470 + 810 = 152280
Step 189: 152280 + 810 = 153090
Step 190: 153090 + 810 = 153900
Step 191: 153900 + 810 = 154710
Step 192: 154710 + 810 = 155520
Step 193: 155520 + 810 = 156330
Step 194: 156330 + 810 = 157140
Step 195: 157140 + 810 = 157950
Step 196: 157950 + 810 = 158760
Step 197: 158760 + 810 = 159570
Step 198: 159570 + 810 = 160380
Step 199: 160380 + 810 = 161190
Step 200: 161190 + 810 = 162000
Step 201: 162000 + 810 = 162810
Step 202: 162810 + 810 = 163620
Step 203: 163620 + 810 = 164430
Step 204: 164430 + 810 = 165240
Step 205: 165240 + 810 = 166050
Step 206: 166050 + 810 = 166860
Step 207: 166860 + 810 = 167670
Step 208: 167670 + 810 = 168480
Step 209: 168480 + 810 = 169290
Step 210: 169290 + 810 = 170100
Step 211: 170100 + 810 = 170910
Step 212: 170910 + 810 = 171720
Step 213: 171720 + 810 = 172530
Step 214: 172530 + 810 = 173340
Step 215: 173340 + 810 = 174150
Step 216: 174150 + 810 = 174960
Step 217: 174960 + 810 = 175770
Step 218: 175770 + 810 = 176580
Step 219: 176580 + 810 = 177390
Step 220: 177390 + 810 = 178200
Step 221: 178200 + 810 = 179010
Step 222: 179010 + 810 = 179820
Step 223: 179820 + 810 = 180630
Step 224: 180630 + 810 = 181440
Step 225: 181440 + 810 = 182250
Step 226: 182250 + 810 = 183060
Step 227: 183060 + 810 = 183870
Step 228: 183870 + 810 = 184680
Step 229: 184680 + 810 = 185490
Step 230: 185490 + 810 = 186300
Step 231: 186300 + 810 = 187110
Step 232: 187110 + 810 = 187920
Step 233: 187920 + 810 = 188730
Step 234: 188730 + 810 = 189540
Step 235: 189540 + 810 = 190350
Step 236: 190350 + 810 = 191160
Step 237: 191160 + 810 = 191970
Step 238: 191970 + 810 = 192780
Step 239: 192780 + 810 = 193590
Step 240: 193590 + 810 = 194400
Step 241: 194400 + 810 = 195210
Step 242: 195210 + 810 = 196020
Step 243: 196020 + 810 = 196830
Step 244: 196830 + 810 = 197640
Step 245: 197640 + 810 = 198450
Step 246: 198450 + 810 = 199260
Step 247: 199260 + 810 = 200070
Step 248: 200070 + 810 = 200880
Step 249: 200880 + 810 = 201690
Step 250: 201690 + 810 = 202500
Step 251: 202500 + 810 = 203310
Step 252: 203310 + 810 = 204120
Step 253: 204120 + 810 = 204930
Step 254: 204930 + 810 = 205740
Step 255: 205740 + 810 = 206550
Step 256: 206550 + 810 = 207360
Step 257: 207360 + 810 = 208170
Step 258: 208170 + 810 = 208980
Step 259: 208980 + 810 = 209790
Step 260: 209790 + 810 = 210600
Step 261: 210600 + 810 = 211410
Step 262: 211410 + 810 = 212220
Step 263: 212220 + 810 = 213030
Step 264: 213030 + 810 = 213840
Step 265: 213840 + 810 = 214650
Step 266: 214650 + 810 = 215460
Step 267: 215460 + 810 = 216270
Step 268: 216270 + 810 = 217080
Step 269: 217080 + 810 = 217890
Step 270: 217890 + 810 = 218700
Step 271: 218700 + 810 = 219510
Step 272: 219510 + 810 = 220320
Step 273: 220320 + 810 = 221130
Step 274: 221130 + 810 = 221940
Step 275: 221940 + 810 = 222750
Step 276: 222750 + 810 = 223560
Step 277: 223560 + 810 = 224370
Step 278: 224370 + 810 = 225180
Step 279: 225180 + 810 = 225990
Step 280: 225990 + 810 = 226800
Step 281: 226800 + 810 = 227610
Step 282: 227610 + 810 = 228420
Step 283: 228420 + 810 = 229230
Step 284: 229230 + 810 = 230040
Step 285: 230040 + 810 = 230850
Step 286: 230850 + 810 = 231660
Step 287: 231660 + 810 = 232470
Step 288: 232470 + 810 = 233280
Step 289: 233280 + 810 = 234090
Step 290: 234090 + 810 = 234900
Step 291: 234900 + 810 = 235710
Step 292: 235710 + 810 = 236520
Step 293: 236520 + 810 = 237330
Step 294: 237330 + 810 = 238140
Step 295: 238140 + 810 = 238950
Step 296: 238950 + 810 = 239760
Step 297: 239760 + 810 = 240570
Step 298: 240570 + 810 = 241380
Step 299: 241380 + 810 = 242190
Step 300: 242190 + 810 = 243000
Step 301: 243000 + 810 = 243810
Step 302: 243810 + 810 = 244620
Step 303: 244620 + 810 = 245430
Step 304: 245430 + 810 = 246240
Step 305: 246240 + 810 = 247050
Step 306: 247050 + 810 = 247860
Step 307: 247860 + 810 = 248670
Step 308: 248670 + 810 = 249480
Step 309: 249480 + 810 = 250290
Step 310: 250290 + 810 = 251100
Step 311: 251100 + 810 = 251910
Step 312: 251910 + 810 = 252720
Step 313: 252720 + 810 = 253530
Step 314: 253530 + 810 = 254340
Step 315: 254340 + 810 = 255150
Step 316: 255150 + 810 = 255960
Step 317: 255960 + 810 = 256770
Step 318: 256770 + 810 = 257580
Step 319: 257580 + 810 = 258390
Step 320: 258390 + 810 = 259200
Step 321: 259200 + 810 = 260010
Step 322: 260010 + 810 = 260820
Step 323: 260820 + 810 = 261630
Step 324: 261630 + 810 = 262440
Step 325: 262440 + 810 = 263250
Step 326: 263250 + 810 = 264060
Step 327: 264060 + 810 = 264870
Step 328: 264870 + 810 = 265680
Step 329: 265680 + 810 = 266490
Step 330: 266490 + 810 = 267300
Step 331: 267300 + 810 = 268110
Step 332: 268110 + 810 = 268920
Step 333: 268920 + 810 = 269730
Step 334: 269730 + 810 = 270540
Step 335: 270540 + 810 = 271350
Step 336: 271350 + 810 = 272160
Step 337: 272160 + 810 = 272970
Step 338: 272970 + 810 = 273780
Step 339: 273780 + 810 = 274590
Step 340: 274590 + 810 = 275400
Step 341: 275400 + 810 = 276210
Step 342: 276210 + 810 = 277020
Step 343: 277020 + 810 = 277830
Step 344: 277830 + 810 = 278640
Step 345: 278640 + 810 = 279450
Step 346: 279450 + 810 = 280260
Step 347: 280260 + 810 = 281070
Step 348: 281070 + 810 = 281880
Step 349: 281880 + 810 = 282690
Step 350: 282690 + 810 = 283500
Step 351: 283500 + 810 = 284310
Step 352: 284310 + 810 = 285120
Step 353: 285120 + 810 = 285930
Step 354: 285930 + 810 = 286740
Step 355: 286740 + 810 = 287550
Step 356: 287550 + 810 = 288360
Step 357: 288360 + 810 = 289170
Step 358: 289170 + 810 = 289980
Step 359: 289980 + 810 = 290790
Step 360: 290790 + 810 = 291600
Step 361: 291600 + 810 = 292410
Step 362: 292410 + 810 = 293220
Step 363: 293220 + 810 = 294030
Step 364: 294030 + 810 = 294840
Step 365: 294840 + 810 = 295650
Step 366: 295650 + 810 = 296460
Step 367: 296460 + 810 = 297270
Step 368: 297270 + 810 = 298080
Step 369: 298080 + 810 = 298890
Step 370: 298890 + 810 = 299700
Step 371: 299700 + 810 = 300510
Step 372: 300510 + 810 = 301320
Step 373: 301320 + 810 = 302130
Step 374: 302130 + 810 = 302940
Step 375: 302940 + 810 = 303750
Step 376: 303750 + 810 = 304560
Step 377: 304560 + 810 = 305370
Step 378: 305370 + 810 = 306180
Step 379: 306180 + 810 = 306990
Step 380: 306990 + 810 = 307800
Step 381: 307800 + 810 = 308610
Step 382: 308610 + 810 = 309420
Step 383: 309420 + 810 = 310230
Step 384: 310230 + 810 = 311040
Step 385: 311040 + 810 = 311850
Step 386: 311850 + 810 = 312660
Step 387: 312660 + 810 = 313470
Step 388: 313470 + 810 = 314280
Step 389: 314280 + 810 = 315090
Step 390: 315090 + 810 = 315900
Step 391: 315900 + 810 = 316710
Step 392: 316710 + 810 = 317520
Step 393: 317520 + 810 = 318330
Step 394: 318330 + 810 = 319140
Step 395: 319140 + 810 = 319950
Step 396: 319950 + 810 = 320760
Step 397: 320760 + 810 = 321570
Step 398: 321570 + 810 = 322380
Step 399: 322380 + 810 = 323190
Step 400: 323190 + 810 = 324000
Step 401: 324000 + 810 = 324810
Step 402: 324810 + 810 = 325620
Step 403: 325620 + 810 = 326430
Step 404: 326430 + 810 = 327240
Step 405: 327240 + 810 = 328050
Step 406: 328050 + 810 = 328860
Step 407: 328860 + 810 = 329670
Step 408: 329670 + 810 = 330480
Step 409: 330480 + 810 = 331290
Step 410: 331290 + 810 = 332100
Step 411: 332100 + 810 = 332910
Step 412: 332910 + 810 = 333720
Step 413: 333720 + 810 = 334530
Step 414: 334530 + 810 = 335340
Step 415: 335340 + 810 = 336150
Step 416: 336150 + 810 = 336960
Step 417: 336960 + 810 = 337770
Step 418: 337770 + 810 = 338580
Step 419: 338580 + 810 = 339390
Step 420: 339390 + 810 = 340200
Step 421: 340200 + 810 = 341010
Step 422: 341010 + 810 = 341820
Step 423: 341820 + 810 = 342630
Step 424: 342630 + 810 = 343440

So, 810*424 = 343440