Alright, let's solve this math problem step by step. First, we have the number 604. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 345. So, we're going to take the number 604 and add it to itself 345 times.
Step 1: 0 + 604 = 604
Step 2: 604 + 604 = 1208
Step 3: 1208 + 604 = 1812
Step 4: 1812 + 604 = 2416
Step 5: 2416 + 604 = 3020
Step 6: 3020 + 604 = 3624
Step 7: 3624 + 604 = 4228
Step 8: 4228 + 604 = 4832
Step 9: 4832 + 604 = 5436
Step 10: 5436 + 604 = 6040
Step 11: 6040 + 604 = 6644
Step 12: 6644 + 604 = 7248
Step 13: 7248 + 604 = 7852
Step 14: 7852 + 604 = 8456
Step 15: 8456 + 604 = 9060
Step 16: 9060 + 604 = 9664
Step 17: 9664 + 604 = 10268
Step 18: 10268 + 604 = 10872
Step 19: 10872 + 604 = 11476
Step 20: 11476 + 604 = 12080
Step 21: 12080 + 604 = 12684
Step 22: 12684 + 604 = 13288
Step 23: 13288 + 604 = 13892
Step 24: 13892 + 604 = 14496
Step 25: 14496 + 604 = 15100
Step 26: 15100 + 604 = 15704
Step 27: 15704 + 604 = 16308
Step 28: 16308 + 604 = 16912
Step 29: 16912 + 604 = 17516
Step 30: 17516 + 604 = 18120
Step 31: 18120 + 604 = 18724
Step 32: 18724 + 604 = 19328
Step 33: 19328 + 604 = 19932
Step 34: 19932 + 604 = 20536
Step 35: 20536 + 604 = 21140
Step 36: 21140 + 604 = 21744
Step 37: 21744 + 604 = 22348
Step 38: 22348 + 604 = 22952
Step 39: 22952 + 604 = 23556
Step 40: 23556 + 604 = 24160
Step 41: 24160 + 604 = 24764
Step 42: 24764 + 604 = 25368
Step 43: 25368 + 604 = 25972
Step 44: 25972 + 604 = 26576
Step 45: 26576 + 604 = 27180
Step 46: 27180 + 604 = 27784
Step 47: 27784 + 604 = 28388
Step 48: 28388 + 604 = 28992
Step 49: 28992 + 604 = 29596
Step 50: 29596 + 604 = 30200
Step 51: 30200 + 604 = 30804
Step 52: 30804 + 604 = 31408
Step 53: 31408 + 604 = 32012
Step 54: 32012 + 604 = 32616
Step 55: 32616 + 604 = 33220
Step 56: 33220 + 604 = 33824
Step 57: 33824 + 604 = 34428
Step 58: 34428 + 604 = 35032
Step 59: 35032 + 604 = 35636
Step 60: 35636 + 604 = 36240
Step 61: 36240 + 604 = 36844
Step 62: 36844 + 604 = 37448
Step 63: 37448 + 604 = 38052
Step 64: 38052 + 604 = 38656
Step 65: 38656 + 604 = 39260
Step 66: 39260 + 604 = 39864
Step 67: 39864 + 604 = 40468
Step 68: 40468 + 604 = 41072
Step 69: 41072 + 604 = 41676
Step 70: 41676 + 604 = 42280
Step 71: 42280 + 604 = 42884
Step 72: 42884 + 604 = 43488
Step 73: 43488 + 604 = 44092
Step 74: 44092 + 604 = 44696
Step 75: 44696 + 604 = 45300
Step 76: 45300 + 604 = 45904
Step 77: 45904 + 604 = 46508
Step 78: 46508 + 604 = 47112
Step 79: 47112 + 604 = 47716
Step 80: 47716 + 604 = 48320
Step 81: 48320 + 604 = 48924
Step 82: 48924 + 604 = 49528
Step 83: 49528 + 604 = 50132
Step 84: 50132 + 604 = 50736
Step 85: 50736 + 604 = 51340
Step 86: 51340 + 604 = 51944
Step 87: 51944 + 604 = 52548
Step 88: 52548 + 604 = 53152
Step 89: 53152 + 604 = 53756
Step 90: 53756 + 604 = 54360
Step 91: 54360 + 604 = 54964
Step 92: 54964 + 604 = 55568
Step 93: 55568 + 604 = 56172
Step 94: 56172 + 604 = 56776
Step 95: 56776 + 604 = 57380
Step 96: 57380 + 604 = 57984
Step 97: 57984 + 604 = 58588
Step 98: 58588 + 604 = 59192
Step 99: 59192 + 604 = 59796
Step 100: 59796 + 604 = 60400
Step 101: 60400 + 604 = 61004
Step 102: 61004 + 604 = 61608
Step 103: 61608 + 604 = 62212
Step 104: 62212 + 604 = 62816
Step 105: 62816 + 604 = 63420
Step 106: 63420 + 604 = 64024
Step 107: 64024 + 604 = 64628
Step 108: 64628 + 604 = 65232
Step 109: 65232 + 604 = 65836
Step 110: 65836 + 604 = 66440
Step 111: 66440 + 604 = 67044
Step 112: 67044 + 604 = 67648
Step 113: 67648 + 604 = 68252
Step 114: 68252 + 604 = 68856
Step 115: 68856 + 604 = 69460
Step 116: 69460 + 604 = 70064
Step 117: 70064 + 604 = 70668
Step 118: 70668 + 604 = 71272
Step 119: 71272 + 604 = 71876
Step 120: 71876 + 604 = 72480
Step 121: 72480 + 604 = 73084
Step 122: 73084 + 604 = 73688
Step 123: 73688 + 604 = 74292
Step 124: 74292 + 604 = 74896
Step 125: 74896 + 604 = 75500
Step 126: 75500 + 604 = 76104
Step 127: 76104 + 604 = 76708
Step 128: 76708 + 604 = 77312
Step 129: 77312 + 604 = 77916
Step 130: 77916 + 604 = 78520
Step 131: 78520 + 604 = 79124
Step 132: 79124 + 604 = 79728
Step 133: 79728 + 604 = 80332
Step 134: 80332 + 604 = 80936
Step 135: 80936 + 604 = 81540
Step 136: 81540 + 604 = 82144
Step 137: 82144 + 604 = 82748
Step 138: 82748 + 604 = 83352
Step 139: 83352 + 604 = 83956
Step 140: 83956 + 604 = 84560
Step 141: 84560 + 604 = 85164
Step 142: 85164 + 604 = 85768
Step 143: 85768 + 604 = 86372
Step 144: 86372 + 604 = 86976
Step 145: 86976 + 604 = 87580
Step 146: 87580 + 604 = 88184
Step 147: 88184 + 604 = 88788
Step 148: 88788 + 604 = 89392
Step 149: 89392 + 604 = 89996
Step 150: 89996 + 604 = 90600
Step 151: 90600 + 604 = 91204
Step 152: 91204 + 604 = 91808
Step 153: 91808 + 604 = 92412
Step 154: 92412 + 604 = 93016
Step 155: 93016 + 604 = 93620
Step 156: 93620 + 604 = 94224
Step 157: 94224 + 604 = 94828
Step 158: 94828 + 604 = 95432
Step 159: 95432 + 604 = 96036
Step 160: 96036 + 604 = 96640
Step 161: 96640 + 604 = 97244
Step 162: 97244 + 604 = 97848
Step 163: 97848 + 604 = 98452
Step 164: 98452 + 604 = 99056
Step 165: 99056 + 604 = 99660
Step 166: 99660 + 604 = 100264
Step 167: 100264 + 604 = 100868
Step 168: 100868 + 604 = 101472
Step 169: 101472 + 604 = 102076
Step 170: 102076 + 604 = 102680
Step 171: 102680 + 604 = 103284
Step 172: 103284 + 604 = 103888
Step 173: 103888 + 604 = 104492
Step 174: 104492 + 604 = 105096
Step 175: 105096 + 604 = 105700
Step 176: 105700 + 604 = 106304
Step 177: 106304 + 604 = 106908
Step 178: 106908 + 604 = 107512
Step 179: 107512 + 604 = 108116
Step 180: 108116 + 604 = 108720
Step 181: 108720 + 604 = 109324
Step 182: 109324 + 604 = 109928
Step 183: 109928 + 604 = 110532
Step 184: 110532 + 604 = 111136
Step 185: 111136 + 604 = 111740
Step 186: 111740 + 604 = 112344
Step 187: 112344 + 604 = 112948
Step 188: 112948 + 604 = 113552
Step 189: 113552 + 604 = 114156
Step 190: 114156 + 604 = 114760
Step 191: 114760 + 604 = 115364
Step 192: 115364 + 604 = 115968
Step 193: 115968 + 604 = 116572
Step 194: 116572 + 604 = 117176
Step 195: 117176 + 604 = 117780
Step 196: 117780 + 604 = 118384
Step 197: 118384 + 604 = 118988
Step 198: 118988 + 604 = 119592
Step 199: 119592 + 604 = 120196
Step 200: 120196 + 604 = 120800
Step 201: 120800 + 604 = 121404
Step 202: 121404 + 604 = 122008
Step 203: 122008 + 604 = 122612
Step 204: 122612 + 604 = 123216
Step 205: 123216 + 604 = 123820
Step 206: 123820 + 604 = 124424
Step 207: 124424 + 604 = 125028
Step 208: 125028 + 604 = 125632
Step 209: 125632 + 604 = 126236
Step 210: 126236 + 604 = 126840
Step 211: 126840 + 604 = 127444
Step 212: 127444 + 604 = 128048
Step 213: 128048 + 604 = 128652
Step 214: 128652 + 604 = 129256
Step 215: 129256 + 604 = 129860
Step 216: 129860 + 604 = 130464
Step 217: 130464 + 604 = 131068
Step 218: 131068 + 604 = 131672
Step 219: 131672 + 604 = 132276
Step 220: 132276 + 604 = 132880
Step 221: 132880 + 604 = 133484
Step 222: 133484 + 604 = 134088
Step 223: 134088 + 604 = 134692
Step 224: 134692 + 604 = 135296
Step 225: 135296 + 604 = 135900
Step 226: 135900 + 604 = 136504
Step 227: 136504 + 604 = 137108
Step 228: 137108 + 604 = 137712
Step 229: 137712 + 604 = 138316
Step 230: 138316 + 604 = 138920
Step 231: 138920 + 604 = 139524
Step 232: 139524 + 604 = 140128
Step 233: 140128 + 604 = 140732
Step 234: 140732 + 604 = 141336
Step 235: 141336 + 604 = 141940
Step 236: 141940 + 604 = 142544
Step 237: 142544 + 604 = 143148
Step 238: 143148 + 604 = 143752
Step 239: 143752 + 604 = 144356
Step 240: 144356 + 604 = 144960
Step 241: 144960 + 604 = 145564
Step 242: 145564 + 604 = 146168
Step 243: 146168 + 604 = 146772
Step 244: 146772 + 604 = 147376
Step 245: 147376 + 604 = 147980
Step 246: 147980 + 604 = 148584
Step 247: 148584 + 604 = 149188
Step 248: 149188 + 604 = 149792
Step 249: 149792 + 604 = 150396
Step 250: 150396 + 604 = 151000
Step 251: 151000 + 604 = 151604
Step 252: 151604 + 604 = 152208
Step 253: 152208 + 604 = 152812
Step 254: 152812 + 604 = 153416
Step 255: 153416 + 604 = 154020
Step 256: 154020 + 604 = 154624
Step 257: 154624 + 604 = 155228
Step 258: 155228 + 604 = 155832
Step 259: 155832 + 604 = 156436
Step 260: 156436 + 604 = 157040
Step 261: 157040 + 604 = 157644
Step 262: 157644 + 604 = 158248
Step 263: 158248 + 604 = 158852
Step 264: 158852 + 604 = 159456
Step 265: 159456 + 604 = 160060
Step 266: 160060 + 604 = 160664
Step 267: 160664 + 604 = 161268
Step 268: 161268 + 604 = 161872
Step 269: 161872 + 604 = 162476
Step 270: 162476 + 604 = 163080
Step 271: 163080 + 604 = 163684
Step 272: 163684 + 604 = 164288
Step 273: 164288 + 604 = 164892
Step 274: 164892 + 604 = 165496
Step 275: 165496 + 604 = 166100
Step 276: 166100 + 604 = 166704
Step 277: 166704 + 604 = 167308
Step 278: 167308 + 604 = 167912
Step 279: 167912 + 604 = 168516
Step 280: 168516 + 604 = 169120
Step 281: 169120 + 604 = 169724
Step 282: 169724 + 604 = 170328
Step 283: 170328 + 604 = 170932
Step 284: 170932 + 604 = 171536
Step 285: 171536 + 604 = 172140
Step 286: 172140 + 604 = 172744
Step 287: 172744 + 604 = 173348
Step 288: 173348 + 604 = 173952
Step 289: 173952 + 604 = 174556
Step 290: 174556 + 604 = 175160
Step 291: 175160 + 604 = 175764
Step 292: 175764 + 604 = 176368
Step 293: 176368 + 604 = 176972
Step 294: 176972 + 604 = 177576
Step 295: 177576 + 604 = 178180
Step 296: 178180 + 604 = 178784
Step 297: 178784 + 604 = 179388
Step 298: 179388 + 604 = 179992
Step 299: 179992 + 604 = 180596
Step 300: 180596 + 604 = 181200
Step 301: 181200 + 604 = 181804
Step 302: 181804 + 604 = 182408
Step 303: 182408 + 604 = 183012
Step 304: 183012 + 604 = 183616
Step 305: 183616 + 604 = 184220
Step 306: 184220 + 604 = 184824
Step 307: 184824 + 604 = 185428
Step 308: 185428 + 604 = 186032
Step 309: 186032 + 604 = 186636
Step 310: 186636 + 604 = 187240
Step 311: 187240 + 604 = 187844
Step 312: 187844 + 604 = 188448
Step 313: 188448 + 604 = 189052
Step 314: 189052 + 604 = 189656
Step 315: 189656 + 604 = 190260
Step 316: 190260 + 604 = 190864
Step 317: 190864 + 604 = 191468
Step 318: 191468 + 604 = 192072
Step 319: 192072 + 604 = 192676
Step 320: 192676 + 604 = 193280
Step 321: 193280 + 604 = 193884
Step 322: 193884 + 604 = 194488
Step 323: 194488 + 604 = 195092
Step 324: 195092 + 604 = 195696
Step 325: 195696 + 604 = 196300
Step 326: 196300 + 604 = 196904
Step 327: 196904 + 604 = 197508
Step 328: 197508 + 604 = 198112
Step 329: 198112 + 604 = 198716
Step 330: 198716 + 604 = 199320
Step 331: 199320 + 604 = 199924
Step 332: 199924 + 604 = 200528
Step 333: 200528 + 604 = 201132
Step 334: 201132 + 604 = 201736
Step 335: 201736 + 604 = 202340
Step 336: 202340 + 604 = 202944
Step 337: 202944 + 604 = 203548
Step 338: 203548 + 604 = 204152
Step 339: 204152 + 604 = 204756
Step 340: 204756 + 604 = 205360
Step 341: 205360 + 604 = 205964
Step 342: 205964 + 604 = 206568
Step 343: 206568 + 604 = 207172
Step 344: 207172 + 604 = 207776
Step 345: 207776 + 604 = 208380

So, 604*345 = 208380