Alright, let's solve this math problem step by step. First, we have the number 711. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 399. So, we're going to take the number 711 and add it to itself 399 times.
Step 1: 0 + 711 = 711
Step 2: 711 + 711 = 1422
Step 3: 1422 + 711 = 2133
Step 4: 2133 + 711 = 2844
Step 5: 2844 + 711 = 3555
Step 6: 3555 + 711 = 4266
Step 7: 4266 + 711 = 4977
Step 8: 4977 + 711 = 5688
Step 9: 5688 + 711 = 6399
Step 10: 6399 + 711 = 7110
Step 11: 7110 + 711 = 7821
Step 12: 7821 + 711 = 8532
Step 13: 8532 + 711 = 9243
Step 14: 9243 + 711 = 9954
Step 15: 9954 + 711 = 10665
Step 16: 10665 + 711 = 11376
Step 17: 11376 + 711 = 12087
Step 18: 12087 + 711 = 12798
Step 19: 12798 + 711 = 13509
Step 20: 13509 + 711 = 14220
Step 21: 14220 + 711 = 14931
Step 22: 14931 + 711 = 15642
Step 23: 15642 + 711 = 16353
Step 24: 16353 + 711 = 17064
Step 25: 17064 + 711 = 17775
Step 26: 17775 + 711 = 18486
Step 27: 18486 + 711 = 19197
Step 28: 19197 + 711 = 19908
Step 29: 19908 + 711 = 20619
Step 30: 20619 + 711 = 21330
Step 31: 21330 + 711 = 22041
Step 32: 22041 + 711 = 22752
Step 33: 22752 + 711 = 23463
Step 34: 23463 + 711 = 24174
Step 35: 24174 + 711 = 24885
Step 36: 24885 + 711 = 25596
Step 37: 25596 + 711 = 26307
Step 38: 26307 + 711 = 27018
Step 39: 27018 + 711 = 27729
Step 40: 27729 + 711 = 28440
Step 41: 28440 + 711 = 29151
Step 42: 29151 + 711 = 29862
Step 43: 29862 + 711 = 30573
Step 44: 30573 + 711 = 31284
Step 45: 31284 + 711 = 31995
Step 46: 31995 + 711 = 32706
Step 47: 32706 + 711 = 33417
Step 48: 33417 + 711 = 34128
Step 49: 34128 + 711 = 34839
Step 50: 34839 + 711 = 35550
Step 51: 35550 + 711 = 36261
Step 52: 36261 + 711 = 36972
Step 53: 36972 + 711 = 37683
Step 54: 37683 + 711 = 38394
Step 55: 38394 + 711 = 39105
Step 56: 39105 + 711 = 39816
Step 57: 39816 + 711 = 40527
Step 58: 40527 + 711 = 41238
Step 59: 41238 + 711 = 41949
Step 60: 41949 + 711 = 42660
Step 61: 42660 + 711 = 43371
Step 62: 43371 + 711 = 44082
Step 63: 44082 + 711 = 44793
Step 64: 44793 + 711 = 45504
Step 65: 45504 + 711 = 46215
Step 66: 46215 + 711 = 46926
Step 67: 46926 + 711 = 47637
Step 68: 47637 + 711 = 48348
Step 69: 48348 + 711 = 49059
Step 70: 49059 + 711 = 49770
Step 71: 49770 + 711 = 50481
Step 72: 50481 + 711 = 51192
Step 73: 51192 + 711 = 51903
Step 74: 51903 + 711 = 52614
Step 75: 52614 + 711 = 53325
Step 76: 53325 + 711 = 54036
Step 77: 54036 + 711 = 54747
Step 78: 54747 + 711 = 55458
Step 79: 55458 + 711 = 56169
Step 80: 56169 + 711 = 56880
Step 81: 56880 + 711 = 57591
Step 82: 57591 + 711 = 58302
Step 83: 58302 + 711 = 59013
Step 84: 59013 + 711 = 59724
Step 85: 59724 + 711 = 60435
Step 86: 60435 + 711 = 61146
Step 87: 61146 + 711 = 61857
Step 88: 61857 + 711 = 62568
Step 89: 62568 + 711 = 63279
Step 90: 63279 + 711 = 63990
Step 91: 63990 + 711 = 64701
Step 92: 64701 + 711 = 65412
Step 93: 65412 + 711 = 66123
Step 94: 66123 + 711 = 66834
Step 95: 66834 + 711 = 67545
Step 96: 67545 + 711 = 68256
Step 97: 68256 + 711 = 68967
Step 98: 68967 + 711 = 69678
Step 99: 69678 + 711 = 70389
Step 100: 70389 + 711 = 71100
Step 101: 71100 + 711 = 71811
Step 102: 71811 + 711 = 72522
Step 103: 72522 + 711 = 73233
Step 104: 73233 + 711 = 73944
Step 105: 73944 + 711 = 74655
Step 106: 74655 + 711 = 75366
Step 107: 75366 + 711 = 76077
Step 108: 76077 + 711 = 76788
Step 109: 76788 + 711 = 77499
Step 110: 77499 + 711 = 78210
Step 111: 78210 + 711 = 78921
Step 112: 78921 + 711 = 79632
Step 113: 79632 + 711 = 80343
Step 114: 80343 + 711 = 81054
Step 115: 81054 + 711 = 81765
Step 116: 81765 + 711 = 82476
Step 117: 82476 + 711 = 83187
Step 118: 83187 + 711 = 83898
Step 119: 83898 + 711 = 84609
Step 120: 84609 + 711 = 85320
Step 121: 85320 + 711 = 86031
Step 122: 86031 + 711 = 86742
Step 123: 86742 + 711 = 87453
Step 124: 87453 + 711 = 88164
Step 125: 88164 + 711 = 88875
Step 126: 88875 + 711 = 89586
Step 127: 89586 + 711 = 90297
Step 128: 90297 + 711 = 91008
Step 129: 91008 + 711 = 91719
Step 130: 91719 + 711 = 92430
Step 131: 92430 + 711 = 93141
Step 132: 93141 + 711 = 93852
Step 133: 93852 + 711 = 94563
Step 134: 94563 + 711 = 95274
Step 135: 95274 + 711 = 95985
Step 136: 95985 + 711 = 96696
Step 137: 96696 + 711 = 97407
Step 138: 97407 + 711 = 98118
Step 139: 98118 + 711 = 98829
Step 140: 98829 + 711 = 99540
Step 141: 99540 + 711 = 100251
Step 142: 100251 + 711 = 100962
Step 143: 100962 + 711 = 101673
Step 144: 101673 + 711 = 102384
Step 145: 102384 + 711 = 103095
Step 146: 103095 + 711 = 103806
Step 147: 103806 + 711 = 104517
Step 148: 104517 + 711 = 105228
Step 149: 105228 + 711 = 105939
Step 150: 105939 + 711 = 106650
Step 151: 106650 + 711 = 107361
Step 152: 107361 + 711 = 108072
Step 153: 108072 + 711 = 108783
Step 154: 108783 + 711 = 109494
Step 155: 109494 + 711 = 110205
Step 156: 110205 + 711 = 110916
Step 157: 110916 + 711 = 111627
Step 158: 111627 + 711 = 112338
Step 159: 112338 + 711 = 113049
Step 160: 113049 + 711 = 113760
Step 161: 113760 + 711 = 114471
Step 162: 114471 + 711 = 115182
Step 163: 115182 + 711 = 115893
Step 164: 115893 + 711 = 116604
Step 165: 116604 + 711 = 117315
Step 166: 117315 + 711 = 118026
Step 167: 118026 + 711 = 118737
Step 168: 118737 + 711 = 119448
Step 169: 119448 + 711 = 120159
Step 170: 120159 + 711 = 120870
Step 171: 120870 + 711 = 121581
Step 172: 121581 + 711 = 122292
Step 173: 122292 + 711 = 123003
Step 174: 123003 + 711 = 123714
Step 175: 123714 + 711 = 124425
Step 176: 124425 + 711 = 125136
Step 177: 125136 + 711 = 125847
Step 178: 125847 + 711 = 126558
Step 179: 126558 + 711 = 127269
Step 180: 127269 + 711 = 127980
Step 181: 127980 + 711 = 128691
Step 182: 128691 + 711 = 129402
Step 183: 129402 + 711 = 130113
Step 184: 130113 + 711 = 130824
Step 185: 130824 + 711 = 131535
Step 186: 131535 + 711 = 132246
Step 187: 132246 + 711 = 132957
Step 188: 132957 + 711 = 133668
Step 189: 133668 + 711 = 134379
Step 190: 134379 + 711 = 135090
Step 191: 135090 + 711 = 135801
Step 192: 135801 + 711 = 136512
Step 193: 136512 + 711 = 137223
Step 194: 137223 + 711 = 137934
Step 195: 137934 + 711 = 138645
Step 196: 138645 + 711 = 139356
Step 197: 139356 + 711 = 140067
Step 198: 140067 + 711 = 140778
Step 199: 140778 + 711 = 141489
Step 200: 141489 + 711 = 142200
Step 201: 142200 + 711 = 142911
Step 202: 142911 + 711 = 143622
Step 203: 143622 + 711 = 144333
Step 204: 144333 + 711 = 145044
Step 205: 145044 + 711 = 145755
Step 206: 145755 + 711 = 146466
Step 207: 146466 + 711 = 147177
Step 208: 147177 + 711 = 147888
Step 209: 147888 + 711 = 148599
Step 210: 148599 + 711 = 149310
Step 211: 149310 + 711 = 150021
Step 212: 150021 + 711 = 150732
Step 213: 150732 + 711 = 151443
Step 214: 151443 + 711 = 152154
Step 215: 152154 + 711 = 152865
Step 216: 152865 + 711 = 153576
Step 217: 153576 + 711 = 154287
Step 218: 154287 + 711 = 154998
Step 219: 154998 + 711 = 155709
Step 220: 155709 + 711 = 156420
Step 221: 156420 + 711 = 157131
Step 222: 157131 + 711 = 157842
Step 223: 157842 + 711 = 158553
Step 224: 158553 + 711 = 159264
Step 225: 159264 + 711 = 159975
Step 226: 159975 + 711 = 160686
Step 227: 160686 + 711 = 161397
Step 228: 161397 + 711 = 162108
Step 229: 162108 + 711 = 162819
Step 230: 162819 + 711 = 163530
Step 231: 163530 + 711 = 164241
Step 232: 164241 + 711 = 164952
Step 233: 164952 + 711 = 165663
Step 234: 165663 + 711 = 166374
Step 235: 166374 + 711 = 167085
Step 236: 167085 + 711 = 167796
Step 237: 167796 + 711 = 168507
Step 238: 168507 + 711 = 169218
Step 239: 169218 + 711 = 169929
Step 240: 169929 + 711 = 170640
Step 241: 170640 + 711 = 171351
Step 242: 171351 + 711 = 172062
Step 243: 172062 + 711 = 172773
Step 244: 172773 + 711 = 173484
Step 245: 173484 + 711 = 174195
Step 246: 174195 + 711 = 174906
Step 247: 174906 + 711 = 175617
Step 248: 175617 + 711 = 176328
Step 249: 176328 + 711 = 177039
Step 250: 177039 + 711 = 177750
Step 251: 177750 + 711 = 178461
Step 252: 178461 + 711 = 179172
Step 253: 179172 + 711 = 179883
Step 254: 179883 + 711 = 180594
Step 255: 180594 + 711 = 181305
Step 256: 181305 + 711 = 182016
Step 257: 182016 + 711 = 182727
Step 258: 182727 + 711 = 183438
Step 259: 183438 + 711 = 184149
Step 260: 184149 + 711 = 184860
Step 261: 184860 + 711 = 185571
Step 262: 185571 + 711 = 186282
Step 263: 186282 + 711 = 186993
Step 264: 186993 + 711 = 187704
Step 265: 187704 + 711 = 188415
Step 266: 188415 + 711 = 189126
Step 267: 189126 + 711 = 189837
Step 268: 189837 + 711 = 190548
Step 269: 190548 + 711 = 191259
Step 270: 191259 + 711 = 191970
Step 271: 191970 + 711 = 192681
Step 272: 192681 + 711 = 193392
Step 273: 193392 + 711 = 194103
Step 274: 194103 + 711 = 194814
Step 275: 194814 + 711 = 195525
Step 276: 195525 + 711 = 196236
Step 277: 196236 + 711 = 196947
Step 278: 196947 + 711 = 197658
Step 279: 197658 + 711 = 198369
Step 280: 198369 + 711 = 199080
Step 281: 199080 + 711 = 199791
Step 282: 199791 + 711 = 200502
Step 283: 200502 + 711 = 201213
Step 284: 201213 + 711 = 201924
Step 285: 201924 + 711 = 202635
Step 286: 202635 + 711 = 203346
Step 287: 203346 + 711 = 204057
Step 288: 204057 + 711 = 204768
Step 289: 204768 + 711 = 205479
Step 290: 205479 + 711 = 206190
Step 291: 206190 + 711 = 206901
Step 292: 206901 + 711 = 207612
Step 293: 207612 + 711 = 208323
Step 294: 208323 + 711 = 209034
Step 295: 209034 + 711 = 209745
Step 296: 209745 + 711 = 210456
Step 297: 210456 + 711 = 211167
Step 298: 211167 + 711 = 211878
Step 299: 211878 + 711 = 212589
Step 300: 212589 + 711 = 213300
Step 301: 213300 + 711 = 214011
Step 302: 214011 + 711 = 214722
Step 303: 214722 + 711 = 215433
Step 304: 215433 + 711 = 216144
Step 305: 216144 + 711 = 216855
Step 306: 216855 + 711 = 217566
Step 307: 217566 + 711 = 218277
Step 308: 218277 + 711 = 218988
Step 309: 218988 + 711 = 219699
Step 310: 219699 + 711 = 220410
Step 311: 220410 + 711 = 221121
Step 312: 221121 + 711 = 221832
Step 313: 221832 + 711 = 222543
Step 314: 222543 + 711 = 223254
Step 315: 223254 + 711 = 223965
Step 316: 223965 + 711 = 224676
Step 317: 224676 + 711 = 225387
Step 318: 225387 + 711 = 226098
Step 319: 226098 + 711 = 226809
Step 320: 226809 + 711 = 227520
Step 321: 227520 + 711 = 228231
Step 322: 228231 + 711 = 228942
Step 323: 228942 + 711 = 229653
Step 324: 229653 + 711 = 230364
Step 325: 230364 + 711 = 231075
Step 326: 231075 + 711 = 231786
Step 327: 231786 + 711 = 232497
Step 328: 232497 + 711 = 233208
Step 329: 233208 + 711 = 233919
Step 330: 233919 + 711 = 234630
Step 331: 234630 + 711 = 235341
Step 332: 235341 + 711 = 236052
Step 333: 236052 + 711 = 236763
Step 334: 236763 + 711 = 237474
Step 335: 237474 + 711 = 238185
Step 336: 238185 + 711 = 238896
Step 337: 238896 + 711 = 239607
Step 338: 239607 + 711 = 240318
Step 339: 240318 + 711 = 241029
Step 340: 241029 + 711 = 241740
Step 341: 241740 + 711 = 242451
Step 342: 242451 + 711 = 243162
Step 343: 243162 + 711 = 243873
Step 344: 243873 + 711 = 244584
Step 345: 244584 + 711 = 245295
Step 346: 245295 + 711 = 246006
Step 347: 246006 + 711 = 246717
Step 348: 246717 + 711 = 247428
Step 349: 247428 + 711 = 248139
Step 350: 248139 + 711 = 248850
Step 351: 248850 + 711 = 249561
Step 352: 249561 + 711 = 250272
Step 353: 250272 + 711 = 250983
Step 354: 250983 + 711 = 251694
Step 355: 251694 + 711 = 252405
Step 356: 252405 + 711 = 253116
Step 357: 253116 + 711 = 253827
Step 358: 253827 + 711 = 254538
Step 359: 254538 + 711 = 255249
Step 360: 255249 + 711 = 255960
Step 361: 255960 + 711 = 256671
Step 362: 256671 + 711 = 257382
Step 363: 257382 + 711 = 258093
Step 364: 258093 + 711 = 258804
Step 365: 258804 + 711 = 259515
Step 366: 259515 + 711 = 260226
Step 367: 260226 + 711 = 260937
Step 368: 260937 + 711 = 261648
Step 369: 261648 + 711 = 262359
Step 370: 262359 + 711 = 263070
Step 371: 263070 + 711 = 263781
Step 372: 263781 + 711 = 264492
Step 373: 264492 + 711 = 265203
Step 374: 265203 + 711 = 265914
Step 375: 265914 + 711 = 266625
Step 376: 266625 + 711 = 267336
Step 377: 267336 + 711 = 268047
Step 378: 268047 + 711 = 268758
Step 379: 268758 + 711 = 269469
Step 380: 269469 + 711 = 270180
Step 381: 270180 + 711 = 270891
Step 382: 270891 + 711 = 271602
Step 383: 271602 + 711 = 272313
Step 384: 272313 + 711 = 273024
Step 385: 273024 + 711 = 273735
Step 386: 273735 + 711 = 274446
Step 387: 274446 + 711 = 275157
Step 388: 275157 + 711 = 275868
Step 389: 275868 + 711 = 276579
Step 390: 276579 + 711 = 277290
Step 391: 277290 + 711 = 278001
Step 392: 278001 + 711 = 278712
Step 393: 278712 + 711 = 279423
Step 394: 279423 + 711 = 280134
Step 395: 280134 + 711 = 280845
Step 396: 280845 + 711 = 281556
Step 397: 281556 + 711 = 282267
Step 398: 282267 + 711 = 282978
Step 399: 282978 + 711 = 283689

So, 711*399 = 283689