Alright, let's solve this math problem step by step. First, we have the number 600. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 423. So, we're going to take the number 600 and add it to itself 423 times.
Step 1: 0 + 600 = 600
Step 2: 600 + 600 = 1200
Step 3: 1200 + 600 = 1800
Step 4: 1800 + 600 = 2400
Step 5: 2400 + 600 = 3000
Step 6: 3000 + 600 = 3600
Step 7: 3600 + 600 = 4200
Step 8: 4200 + 600 = 4800
Step 9: 4800 + 600 = 5400
Step 10: 5400 + 600 = 6000
Step 11: 6000 + 600 = 6600
Step 12: 6600 + 600 = 7200
Step 13: 7200 + 600 = 7800
Step 14: 7800 + 600 = 8400
Step 15: 8400 + 600 = 9000
Step 16: 9000 + 600 = 9600
Step 17: 9600 + 600 = 10200
Step 18: 10200 + 600 = 10800
Step 19: 10800 + 600 = 11400
Step 20: 11400 + 600 = 12000
Step 21: 12000 + 600 = 12600
Step 22: 12600 + 600 = 13200
Step 23: 13200 + 600 = 13800
Step 24: 13800 + 600 = 14400
Step 25: 14400 + 600 = 15000
Step 26: 15000 + 600 = 15600
Step 27: 15600 + 600 = 16200
Step 28: 16200 + 600 = 16800
Step 29: 16800 + 600 = 17400
Step 30: 17400 + 600 = 18000
Step 31: 18000 + 600 = 18600
Step 32: 18600 + 600 = 19200
Step 33: 19200 + 600 = 19800
Step 34: 19800 + 600 = 20400
Step 35: 20400 + 600 = 21000
Step 36: 21000 + 600 = 21600
Step 37: 21600 + 600 = 22200
Step 38: 22200 + 600 = 22800
Step 39: 22800 + 600 = 23400
Step 40: 23400 + 600 = 24000
Step 41: 24000 + 600 = 24600
Step 42: 24600 + 600 = 25200
Step 43: 25200 + 600 = 25800
Step 44: 25800 + 600 = 26400
Step 45: 26400 + 600 = 27000
Step 46: 27000 + 600 = 27600
Step 47: 27600 + 600 = 28200
Step 48: 28200 + 600 = 28800
Step 49: 28800 + 600 = 29400
Step 50: 29400 + 600 = 30000
Step 51: 30000 + 600 = 30600
Step 52: 30600 + 600 = 31200
Step 53: 31200 + 600 = 31800
Step 54: 31800 + 600 = 32400
Step 55: 32400 + 600 = 33000
Step 56: 33000 + 600 = 33600
Step 57: 33600 + 600 = 34200
Step 58: 34200 + 600 = 34800
Step 59: 34800 + 600 = 35400
Step 60: 35400 + 600 = 36000
Step 61: 36000 + 600 = 36600
Step 62: 36600 + 600 = 37200
Step 63: 37200 + 600 = 37800
Step 64: 37800 + 600 = 38400
Step 65: 38400 + 600 = 39000
Step 66: 39000 + 600 = 39600
Step 67: 39600 + 600 = 40200
Step 68: 40200 + 600 = 40800
Step 69: 40800 + 600 = 41400
Step 70: 41400 + 600 = 42000
Step 71: 42000 + 600 = 42600
Step 72: 42600 + 600 = 43200
Step 73: 43200 + 600 = 43800
Step 74: 43800 + 600 = 44400
Step 75: 44400 + 600 = 45000
Step 76: 45000 + 600 = 45600
Step 77: 45600 + 600 = 46200
Step 78: 46200 + 600 = 46800
Step 79: 46800 + 600 = 47400
Step 80: 47400 + 600 = 48000
Step 81: 48000 + 600 = 48600
Step 82: 48600 + 600 = 49200
Step 83: 49200 + 600 = 49800
Step 84: 49800 + 600 = 50400
Step 85: 50400 + 600 = 51000
Step 86: 51000 + 600 = 51600
Step 87: 51600 + 600 = 52200
Step 88: 52200 + 600 = 52800
Step 89: 52800 + 600 = 53400
Step 90: 53400 + 600 = 54000
Step 91: 54000 + 600 = 54600
Step 92: 54600 + 600 = 55200
Step 93: 55200 + 600 = 55800
Step 94: 55800 + 600 = 56400
Step 95: 56400 + 600 = 57000
Step 96: 57000 + 600 = 57600
Step 97: 57600 + 600 = 58200
Step 98: 58200 + 600 = 58800
Step 99: 58800 + 600 = 59400
Step 100: 59400 + 600 = 60000
Step 101: 60000 + 600 = 60600
Step 102: 60600 + 600 = 61200
Step 103: 61200 + 600 = 61800
Step 104: 61800 + 600 = 62400
Step 105: 62400 + 600 = 63000
Step 106: 63000 + 600 = 63600
Step 107: 63600 + 600 = 64200
Step 108: 64200 + 600 = 64800
Step 109: 64800 + 600 = 65400
Step 110: 65400 + 600 = 66000
Step 111: 66000 + 600 = 66600
Step 112: 66600 + 600 = 67200
Step 113: 67200 + 600 = 67800
Step 114: 67800 + 600 = 68400
Step 115: 68400 + 600 = 69000
Step 116: 69000 + 600 = 69600
Step 117: 69600 + 600 = 70200
Step 118: 70200 + 600 = 70800
Step 119: 70800 + 600 = 71400
Step 120: 71400 + 600 = 72000
Step 121: 72000 + 600 = 72600
Step 122: 72600 + 600 = 73200
Step 123: 73200 + 600 = 73800
Step 124: 73800 + 600 = 74400
Step 125: 74400 + 600 = 75000
Step 126: 75000 + 600 = 75600
Step 127: 75600 + 600 = 76200
Step 128: 76200 + 600 = 76800
Step 129: 76800 + 600 = 77400
Step 130: 77400 + 600 = 78000
Step 131: 78000 + 600 = 78600
Step 132: 78600 + 600 = 79200
Step 133: 79200 + 600 = 79800
Step 134: 79800 + 600 = 80400
Step 135: 80400 + 600 = 81000
Step 136: 81000 + 600 = 81600
Step 137: 81600 + 600 = 82200
Step 138: 82200 + 600 = 82800
Step 139: 82800 + 600 = 83400
Step 140: 83400 + 600 = 84000
Step 141: 84000 + 600 = 84600
Step 142: 84600 + 600 = 85200
Step 143: 85200 + 600 = 85800
Step 144: 85800 + 600 = 86400
Step 145: 86400 + 600 = 87000
Step 146: 87000 + 600 = 87600
Step 147: 87600 + 600 = 88200
Step 148: 88200 + 600 = 88800
Step 149: 88800 + 600 = 89400
Step 150: 89400 + 600 = 90000
Step 151: 90000 + 600 = 90600
Step 152: 90600 + 600 = 91200
Step 153: 91200 + 600 = 91800
Step 154: 91800 + 600 = 92400
Step 155: 92400 + 600 = 93000
Step 156: 93000 + 600 = 93600
Step 157: 93600 + 600 = 94200
Step 158: 94200 + 600 = 94800
Step 159: 94800 + 600 = 95400
Step 160: 95400 + 600 = 96000
Step 161: 96000 + 600 = 96600
Step 162: 96600 + 600 = 97200
Step 163: 97200 + 600 = 97800
Step 164: 97800 + 600 = 98400
Step 165: 98400 + 600 = 99000
Step 166: 99000 + 600 = 99600
Step 167: 99600 + 600 = 100200
Step 168: 100200 + 600 = 100800
Step 169: 100800 + 600 = 101400
Step 170: 101400 + 600 = 102000
Step 171: 102000 + 600 = 102600
Step 172: 102600 + 600 = 103200
Step 173: 103200 + 600 = 103800
Step 174: 103800 + 600 = 104400
Step 175: 104400 + 600 = 105000
Step 176: 105000 + 600 = 105600
Step 177: 105600 + 600 = 106200
Step 178: 106200 + 600 = 106800
Step 179: 106800 + 600 = 107400
Step 180: 107400 + 600 = 108000
Step 181: 108000 + 600 = 108600
Step 182: 108600 + 600 = 109200
Step 183: 109200 + 600 = 109800
Step 184: 109800 + 600 = 110400
Step 185: 110400 + 600 = 111000
Step 186: 111000 + 600 = 111600
Step 187: 111600 + 600 = 112200
Step 188: 112200 + 600 = 112800
Step 189: 112800 + 600 = 113400
Step 190: 113400 + 600 = 114000
Step 191: 114000 + 600 = 114600
Step 192: 114600 + 600 = 115200
Step 193: 115200 + 600 = 115800
Step 194: 115800 + 600 = 116400
Step 195: 116400 + 600 = 117000
Step 196: 117000 + 600 = 117600
Step 197: 117600 + 600 = 118200
Step 198: 118200 + 600 = 118800
Step 199: 118800 + 600 = 119400
Step 200: 119400 + 600 = 120000
Step 201: 120000 + 600 = 120600
Step 202: 120600 + 600 = 121200
Step 203: 121200 + 600 = 121800
Step 204: 121800 + 600 = 122400
Step 205: 122400 + 600 = 123000
Step 206: 123000 + 600 = 123600
Step 207: 123600 + 600 = 124200
Step 208: 124200 + 600 = 124800
Step 209: 124800 + 600 = 125400
Step 210: 125400 + 600 = 126000
Step 211: 126000 + 600 = 126600
Step 212: 126600 + 600 = 127200
Step 213: 127200 + 600 = 127800
Step 214: 127800 + 600 = 128400
Step 215: 128400 + 600 = 129000
Step 216: 129000 + 600 = 129600
Step 217: 129600 + 600 = 130200
Step 218: 130200 + 600 = 130800
Step 219: 130800 + 600 = 131400
Step 220: 131400 + 600 = 132000
Step 221: 132000 + 600 = 132600
Step 222: 132600 + 600 = 133200
Step 223: 133200 + 600 = 133800
Step 224: 133800 + 600 = 134400
Step 225: 134400 + 600 = 135000
Step 226: 135000 + 600 = 135600
Step 227: 135600 + 600 = 136200
Step 228: 136200 + 600 = 136800
Step 229: 136800 + 600 = 137400
Step 230: 137400 + 600 = 138000
Step 231: 138000 + 600 = 138600
Step 232: 138600 + 600 = 139200
Step 233: 139200 + 600 = 139800
Step 234: 139800 + 600 = 140400
Step 235: 140400 + 600 = 141000
Step 236: 141000 + 600 = 141600
Step 237: 141600 + 600 = 142200
Step 238: 142200 + 600 = 142800
Step 239: 142800 + 600 = 143400
Step 240: 143400 + 600 = 144000
Step 241: 144000 + 600 = 144600
Step 242: 144600 + 600 = 145200
Step 243: 145200 + 600 = 145800
Step 244: 145800 + 600 = 146400
Step 245: 146400 + 600 = 147000
Step 246: 147000 + 600 = 147600
Step 247: 147600 + 600 = 148200
Step 248: 148200 + 600 = 148800
Step 249: 148800 + 600 = 149400
Step 250: 149400 + 600 = 150000
Step 251: 150000 + 600 = 150600
Step 252: 150600 + 600 = 151200
Step 253: 151200 + 600 = 151800
Step 254: 151800 + 600 = 152400
Step 255: 152400 + 600 = 153000
Step 256: 153000 + 600 = 153600
Step 257: 153600 + 600 = 154200
Step 258: 154200 + 600 = 154800
Step 259: 154800 + 600 = 155400
Step 260: 155400 + 600 = 156000
Step 261: 156000 + 600 = 156600
Step 262: 156600 + 600 = 157200
Step 263: 157200 + 600 = 157800
Step 264: 157800 + 600 = 158400
Step 265: 158400 + 600 = 159000
Step 266: 159000 + 600 = 159600
Step 267: 159600 + 600 = 160200
Step 268: 160200 + 600 = 160800
Step 269: 160800 + 600 = 161400
Step 270: 161400 + 600 = 162000
Step 271: 162000 + 600 = 162600
Step 272: 162600 + 600 = 163200
Step 273: 163200 + 600 = 163800
Step 274: 163800 + 600 = 164400
Step 275: 164400 + 600 = 165000
Step 276: 165000 + 600 = 165600
Step 277: 165600 + 600 = 166200
Step 278: 166200 + 600 = 166800
Step 279: 166800 + 600 = 167400
Step 280: 167400 + 600 = 168000
Step 281: 168000 + 600 = 168600
Step 282: 168600 + 600 = 169200
Step 283: 169200 + 600 = 169800
Step 284: 169800 + 600 = 170400
Step 285: 170400 + 600 = 171000
Step 286: 171000 + 600 = 171600
Step 287: 171600 + 600 = 172200
Step 288: 172200 + 600 = 172800
Step 289: 172800 + 600 = 173400
Step 290: 173400 + 600 = 174000
Step 291: 174000 + 600 = 174600
Step 292: 174600 + 600 = 175200
Step 293: 175200 + 600 = 175800
Step 294: 175800 + 600 = 176400
Step 295: 176400 + 600 = 177000
Step 296: 177000 + 600 = 177600
Step 297: 177600 + 600 = 178200
Step 298: 178200 + 600 = 178800
Step 299: 178800 + 600 = 179400
Step 300: 179400 + 600 = 180000
Step 301: 180000 + 600 = 180600
Step 302: 180600 + 600 = 181200
Step 303: 181200 + 600 = 181800
Step 304: 181800 + 600 = 182400
Step 305: 182400 + 600 = 183000
Step 306: 183000 + 600 = 183600
Step 307: 183600 + 600 = 184200
Step 308: 184200 + 600 = 184800
Step 309: 184800 + 600 = 185400
Step 310: 185400 + 600 = 186000
Step 311: 186000 + 600 = 186600
Step 312: 186600 + 600 = 187200
Step 313: 187200 + 600 = 187800
Step 314: 187800 + 600 = 188400
Step 315: 188400 + 600 = 189000
Step 316: 189000 + 600 = 189600
Step 317: 189600 + 600 = 190200
Step 318: 190200 + 600 = 190800
Step 319: 190800 + 600 = 191400
Step 320: 191400 + 600 = 192000
Step 321: 192000 + 600 = 192600
Step 322: 192600 + 600 = 193200
Step 323: 193200 + 600 = 193800
Step 324: 193800 + 600 = 194400
Step 325: 194400 + 600 = 195000
Step 326: 195000 + 600 = 195600
Step 327: 195600 + 600 = 196200
Step 328: 196200 + 600 = 196800
Step 329: 196800 + 600 = 197400
Step 330: 197400 + 600 = 198000
Step 331: 198000 + 600 = 198600
Step 332: 198600 + 600 = 199200
Step 333: 199200 + 600 = 199800
Step 334: 199800 + 600 = 200400
Step 335: 200400 + 600 = 201000
Step 336: 201000 + 600 = 201600
Step 337: 201600 + 600 = 202200
Step 338: 202200 + 600 = 202800
Step 339: 202800 + 600 = 203400
Step 340: 203400 + 600 = 204000
Step 341: 204000 + 600 = 204600
Step 342: 204600 + 600 = 205200
Step 343: 205200 + 600 = 205800
Step 344: 205800 + 600 = 206400
Step 345: 206400 + 600 = 207000
Step 346: 207000 + 600 = 207600
Step 347: 207600 + 600 = 208200
Step 348: 208200 + 600 = 208800
Step 349: 208800 + 600 = 209400
Step 350: 209400 + 600 = 210000
Step 351: 210000 + 600 = 210600
Step 352: 210600 + 600 = 211200
Step 353: 211200 + 600 = 211800
Step 354: 211800 + 600 = 212400
Step 355: 212400 + 600 = 213000
Step 356: 213000 + 600 = 213600
Step 357: 213600 + 600 = 214200
Step 358: 214200 + 600 = 214800
Step 359: 214800 + 600 = 215400
Step 360: 215400 + 600 = 216000
Step 361: 216000 + 600 = 216600
Step 362: 216600 + 600 = 217200
Step 363: 217200 + 600 = 217800
Step 364: 217800 + 600 = 218400
Step 365: 218400 + 600 = 219000
Step 366: 219000 + 600 = 219600
Step 367: 219600 + 600 = 220200
Step 368: 220200 + 600 = 220800
Step 369: 220800 + 600 = 221400
Step 370: 221400 + 600 = 222000
Step 371: 222000 + 600 = 222600
Step 372: 222600 + 600 = 223200
Step 373: 223200 + 600 = 223800
Step 374: 223800 + 600 = 224400
Step 375: 224400 + 600 = 225000
Step 376: 225000 + 600 = 225600
Step 377: 225600 + 600 = 226200
Step 378: 226200 + 600 = 226800
Step 379: 226800 + 600 = 227400
Step 380: 227400 + 600 = 228000
Step 381: 228000 + 600 = 228600
Step 382: 228600 + 600 = 229200
Step 383: 229200 + 600 = 229800
Step 384: 229800 + 600 = 230400
Step 385: 230400 + 600 = 231000
Step 386: 231000 + 600 = 231600
Step 387: 231600 + 600 = 232200
Step 388: 232200 + 600 = 232800
Step 389: 232800 + 600 = 233400
Step 390: 233400 + 600 = 234000
Step 391: 234000 + 600 = 234600
Step 392: 234600 + 600 = 235200
Step 393: 235200 + 600 = 235800
Step 394: 235800 + 600 = 236400
Step 395: 236400 + 600 = 237000
Step 396: 237000 + 600 = 237600
Step 397: 237600 + 600 = 238200
Step 398: 238200 + 600 = 238800
Step 399: 238800 + 600 = 239400
Step 400: 239400 + 600 = 240000
Step 401: 240000 + 600 = 240600
Step 402: 240600 + 600 = 241200
Step 403: 241200 + 600 = 241800
Step 404: 241800 + 600 = 242400
Step 405: 242400 + 600 = 243000
Step 406: 243000 + 600 = 243600
Step 407: 243600 + 600 = 244200
Step 408: 244200 + 600 = 244800
Step 409: 244800 + 600 = 245400
Step 410: 245400 + 600 = 246000
Step 411: 246000 + 600 = 246600
Step 412: 246600 + 600 = 247200
Step 413: 247200 + 600 = 247800
Step 414: 247800 + 600 = 248400
Step 415: 248400 + 600 = 249000
Step 416: 249000 + 600 = 249600
Step 417: 249600 + 600 = 250200
Step 418: 250200 + 600 = 250800
Step 419: 250800 + 600 = 251400
Step 420: 251400 + 600 = 252000
Step 421: 252000 + 600 = 252600
Step 422: 252600 + 600 = 253200
Step 423: 253200 + 600 = 253800

So, 600*423 = 253800