Alright, let's solve this math problem step by step. First, we have the number 671. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 320. So, we're going to take the number 671 and add it to itself 320 times.
Step 1: 0 + 671 = 671
Step 2: 671 + 671 = 1342
Step 3: 1342 + 671 = 2013
Step 4: 2013 + 671 = 2684
Step 5: 2684 + 671 = 3355
Step 6: 3355 + 671 = 4026
Step 7: 4026 + 671 = 4697
Step 8: 4697 + 671 = 5368
Step 9: 5368 + 671 = 6039
Step 10: 6039 + 671 = 6710
Step 11: 6710 + 671 = 7381
Step 12: 7381 + 671 = 8052
Step 13: 8052 + 671 = 8723
Step 14: 8723 + 671 = 9394
Step 15: 9394 + 671 = 10065
Step 16: 10065 + 671 = 10736
Step 17: 10736 + 671 = 11407
Step 18: 11407 + 671 = 12078
Step 19: 12078 + 671 = 12749
Step 20: 12749 + 671 = 13420
Step 21: 13420 + 671 = 14091
Step 22: 14091 + 671 = 14762
Step 23: 14762 + 671 = 15433
Step 24: 15433 + 671 = 16104
Step 25: 16104 + 671 = 16775
Step 26: 16775 + 671 = 17446
Step 27: 17446 + 671 = 18117
Step 28: 18117 + 671 = 18788
Step 29: 18788 + 671 = 19459
Step 30: 19459 + 671 = 20130
Step 31: 20130 + 671 = 20801
Step 32: 20801 + 671 = 21472
Step 33: 21472 + 671 = 22143
Step 34: 22143 + 671 = 22814
Step 35: 22814 + 671 = 23485
Step 36: 23485 + 671 = 24156
Step 37: 24156 + 671 = 24827
Step 38: 24827 + 671 = 25498
Step 39: 25498 + 671 = 26169
Step 40: 26169 + 671 = 26840
Step 41: 26840 + 671 = 27511
Step 42: 27511 + 671 = 28182
Step 43: 28182 + 671 = 28853
Step 44: 28853 + 671 = 29524
Step 45: 29524 + 671 = 30195
Step 46: 30195 + 671 = 30866
Step 47: 30866 + 671 = 31537
Step 48: 31537 + 671 = 32208
Step 49: 32208 + 671 = 32879
Step 50: 32879 + 671 = 33550
Step 51: 33550 + 671 = 34221
Step 52: 34221 + 671 = 34892
Step 53: 34892 + 671 = 35563
Step 54: 35563 + 671 = 36234
Step 55: 36234 + 671 = 36905
Step 56: 36905 + 671 = 37576
Step 57: 37576 + 671 = 38247
Step 58: 38247 + 671 = 38918
Step 59: 38918 + 671 = 39589
Step 60: 39589 + 671 = 40260
Step 61: 40260 + 671 = 40931
Step 62: 40931 + 671 = 41602
Step 63: 41602 + 671 = 42273
Step 64: 42273 + 671 = 42944
Step 65: 42944 + 671 = 43615
Step 66: 43615 + 671 = 44286
Step 67: 44286 + 671 = 44957
Step 68: 44957 + 671 = 45628
Step 69: 45628 + 671 = 46299
Step 70: 46299 + 671 = 46970
Step 71: 46970 + 671 = 47641
Step 72: 47641 + 671 = 48312
Step 73: 48312 + 671 = 48983
Step 74: 48983 + 671 = 49654
Step 75: 49654 + 671 = 50325
Step 76: 50325 + 671 = 50996
Step 77: 50996 + 671 = 51667
Step 78: 51667 + 671 = 52338
Step 79: 52338 + 671 = 53009
Step 80: 53009 + 671 = 53680
Step 81: 53680 + 671 = 54351
Step 82: 54351 + 671 = 55022
Step 83: 55022 + 671 = 55693
Step 84: 55693 + 671 = 56364
Step 85: 56364 + 671 = 57035
Step 86: 57035 + 671 = 57706
Step 87: 57706 + 671 = 58377
Step 88: 58377 + 671 = 59048
Step 89: 59048 + 671 = 59719
Step 90: 59719 + 671 = 60390
Step 91: 60390 + 671 = 61061
Step 92: 61061 + 671 = 61732
Step 93: 61732 + 671 = 62403
Step 94: 62403 + 671 = 63074
Step 95: 63074 + 671 = 63745
Step 96: 63745 + 671 = 64416
Step 97: 64416 + 671 = 65087
Step 98: 65087 + 671 = 65758
Step 99: 65758 + 671 = 66429
Step 100: 66429 + 671 = 67100
Step 101: 67100 + 671 = 67771
Step 102: 67771 + 671 = 68442
Step 103: 68442 + 671 = 69113
Step 104: 69113 + 671 = 69784
Step 105: 69784 + 671 = 70455
Step 106: 70455 + 671 = 71126
Step 107: 71126 + 671 = 71797
Step 108: 71797 + 671 = 72468
Step 109: 72468 + 671 = 73139
Step 110: 73139 + 671 = 73810
Step 111: 73810 + 671 = 74481
Step 112: 74481 + 671 = 75152
Step 113: 75152 + 671 = 75823
Step 114: 75823 + 671 = 76494
Step 115: 76494 + 671 = 77165
Step 116: 77165 + 671 = 77836
Step 117: 77836 + 671 = 78507
Step 118: 78507 + 671 = 79178
Step 119: 79178 + 671 = 79849
Step 120: 79849 + 671 = 80520
Step 121: 80520 + 671 = 81191
Step 122: 81191 + 671 = 81862
Step 123: 81862 + 671 = 82533
Step 124: 82533 + 671 = 83204
Step 125: 83204 + 671 = 83875
Step 126: 83875 + 671 = 84546
Step 127: 84546 + 671 = 85217
Step 128: 85217 + 671 = 85888
Step 129: 85888 + 671 = 86559
Step 130: 86559 + 671 = 87230
Step 131: 87230 + 671 = 87901
Step 132: 87901 + 671 = 88572
Step 133: 88572 + 671 = 89243
Step 134: 89243 + 671 = 89914
Step 135: 89914 + 671 = 90585
Step 136: 90585 + 671 = 91256
Step 137: 91256 + 671 = 91927
Step 138: 91927 + 671 = 92598
Step 139: 92598 + 671 = 93269
Step 140: 93269 + 671 = 93940
Step 141: 93940 + 671 = 94611
Step 142: 94611 + 671 = 95282
Step 143: 95282 + 671 = 95953
Step 144: 95953 + 671 = 96624
Step 145: 96624 + 671 = 97295
Step 146: 97295 + 671 = 97966
Step 147: 97966 + 671 = 98637
Step 148: 98637 + 671 = 99308
Step 149: 99308 + 671 = 99979
Step 150: 99979 + 671 = 100650
Step 151: 100650 + 671 = 101321
Step 152: 101321 + 671 = 101992
Step 153: 101992 + 671 = 102663
Step 154: 102663 + 671 = 103334
Step 155: 103334 + 671 = 104005
Step 156: 104005 + 671 = 104676
Step 157: 104676 + 671 = 105347
Step 158: 105347 + 671 = 106018
Step 159: 106018 + 671 = 106689
Step 160: 106689 + 671 = 107360
Step 161: 107360 + 671 = 108031
Step 162: 108031 + 671 = 108702
Step 163: 108702 + 671 = 109373
Step 164: 109373 + 671 = 110044
Step 165: 110044 + 671 = 110715
Step 166: 110715 + 671 = 111386
Step 167: 111386 + 671 = 112057
Step 168: 112057 + 671 = 112728
Step 169: 112728 + 671 = 113399
Step 170: 113399 + 671 = 114070
Step 171: 114070 + 671 = 114741
Step 172: 114741 + 671 = 115412
Step 173: 115412 + 671 = 116083
Step 174: 116083 + 671 = 116754
Step 175: 116754 + 671 = 117425
Step 176: 117425 + 671 = 118096
Step 177: 118096 + 671 = 118767
Step 178: 118767 + 671 = 119438
Step 179: 119438 + 671 = 120109
Step 180: 120109 + 671 = 120780
Step 181: 120780 + 671 = 121451
Step 182: 121451 + 671 = 122122
Step 183: 122122 + 671 = 122793
Step 184: 122793 + 671 = 123464
Step 185: 123464 + 671 = 124135
Step 186: 124135 + 671 = 124806
Step 187: 124806 + 671 = 125477
Step 188: 125477 + 671 = 126148
Step 189: 126148 + 671 = 126819
Step 190: 126819 + 671 = 127490
Step 191: 127490 + 671 = 128161
Step 192: 128161 + 671 = 128832
Step 193: 128832 + 671 = 129503
Step 194: 129503 + 671 = 130174
Step 195: 130174 + 671 = 130845
Step 196: 130845 + 671 = 131516
Step 197: 131516 + 671 = 132187
Step 198: 132187 + 671 = 132858
Step 199: 132858 + 671 = 133529
Step 200: 133529 + 671 = 134200
Step 201: 134200 + 671 = 134871
Step 202: 134871 + 671 = 135542
Step 203: 135542 + 671 = 136213
Step 204: 136213 + 671 = 136884
Step 205: 136884 + 671 = 137555
Step 206: 137555 + 671 = 138226
Step 207: 138226 + 671 = 138897
Step 208: 138897 + 671 = 139568
Step 209: 139568 + 671 = 140239
Step 210: 140239 + 671 = 140910
Step 211: 140910 + 671 = 141581
Step 212: 141581 + 671 = 142252
Step 213: 142252 + 671 = 142923
Step 214: 142923 + 671 = 143594
Step 215: 143594 + 671 = 144265
Step 216: 144265 + 671 = 144936
Step 217: 144936 + 671 = 145607
Step 218: 145607 + 671 = 146278
Step 219: 146278 + 671 = 146949
Step 220: 146949 + 671 = 147620
Step 221: 147620 + 671 = 148291
Step 222: 148291 + 671 = 148962
Step 223: 148962 + 671 = 149633
Step 224: 149633 + 671 = 150304
Step 225: 150304 + 671 = 150975
Step 226: 150975 + 671 = 151646
Step 227: 151646 + 671 = 152317
Step 228: 152317 + 671 = 152988
Step 229: 152988 + 671 = 153659
Step 230: 153659 + 671 = 154330
Step 231: 154330 + 671 = 155001
Step 232: 155001 + 671 = 155672
Step 233: 155672 + 671 = 156343
Step 234: 156343 + 671 = 157014
Step 235: 157014 + 671 = 157685
Step 236: 157685 + 671 = 158356
Step 237: 158356 + 671 = 159027
Step 238: 159027 + 671 = 159698
Step 239: 159698 + 671 = 160369
Step 240: 160369 + 671 = 161040
Step 241: 161040 + 671 = 161711
Step 242: 161711 + 671 = 162382
Step 243: 162382 + 671 = 163053
Step 244: 163053 + 671 = 163724
Step 245: 163724 + 671 = 164395
Step 246: 164395 + 671 = 165066
Step 247: 165066 + 671 = 165737
Step 248: 165737 + 671 = 166408
Step 249: 166408 + 671 = 167079
Step 250: 167079 + 671 = 167750
Step 251: 167750 + 671 = 168421
Step 252: 168421 + 671 = 169092
Step 253: 169092 + 671 = 169763
Step 254: 169763 + 671 = 170434
Step 255: 170434 + 671 = 171105
Step 256: 171105 + 671 = 171776
Step 257: 171776 + 671 = 172447
Step 258: 172447 + 671 = 173118
Step 259: 173118 + 671 = 173789
Step 260: 173789 + 671 = 174460
Step 261: 174460 + 671 = 175131
Step 262: 175131 + 671 = 175802
Step 263: 175802 + 671 = 176473
Step 264: 176473 + 671 = 177144
Step 265: 177144 + 671 = 177815
Step 266: 177815 + 671 = 178486
Step 267: 178486 + 671 = 179157
Step 268: 179157 + 671 = 179828
Step 269: 179828 + 671 = 180499
Step 270: 180499 + 671 = 181170
Step 271: 181170 + 671 = 181841
Step 272: 181841 + 671 = 182512
Step 273: 182512 + 671 = 183183
Step 274: 183183 + 671 = 183854
Step 275: 183854 + 671 = 184525
Step 276: 184525 + 671 = 185196
Step 277: 185196 + 671 = 185867
Step 278: 185867 + 671 = 186538
Step 279: 186538 + 671 = 187209
Step 280: 187209 + 671 = 187880
Step 281: 187880 + 671 = 188551
Step 282: 188551 + 671 = 189222
Step 283: 189222 + 671 = 189893
Step 284: 189893 + 671 = 190564
Step 285: 190564 + 671 = 191235
Step 286: 191235 + 671 = 191906
Step 287: 191906 + 671 = 192577
Step 288: 192577 + 671 = 193248
Step 289: 193248 + 671 = 193919
Step 290: 193919 + 671 = 194590
Step 291: 194590 + 671 = 195261
Step 292: 195261 + 671 = 195932
Step 293: 195932 + 671 = 196603
Step 294: 196603 + 671 = 197274
Step 295: 197274 + 671 = 197945
Step 296: 197945 + 671 = 198616
Step 297: 198616 + 671 = 199287
Step 298: 199287 + 671 = 199958
Step 299: 199958 + 671 = 200629
Step 300: 200629 + 671 = 201300
Step 301: 201300 + 671 = 201971
Step 302: 201971 + 671 = 202642
Step 303: 202642 + 671 = 203313
Step 304: 203313 + 671 = 203984
Step 305: 203984 + 671 = 204655
Step 306: 204655 + 671 = 205326
Step 307: 205326 + 671 = 205997
Step 308: 205997 + 671 = 206668
Step 309: 206668 + 671 = 207339
Step 310: 207339 + 671 = 208010
Step 311: 208010 + 671 = 208681
Step 312: 208681 + 671 = 209352
Step 313: 209352 + 671 = 210023
Step 314: 210023 + 671 = 210694
Step 315: 210694 + 671 = 211365
Step 316: 211365 + 671 = 212036
Step 317: 212036 + 671 = 212707
Step 318: 212707 + 671 = 213378
Step 319: 213378 + 671 = 214049
Step 320: 214049 + 671 = 214720

So, 671*320 = 214720