Without delay, let's solve this. We've got 714 and we will be multiplying it by 390, that is, adding 714 to itself 390 times.
Step 1: 0 + 714 = 714
Step 2: 714 + 714 = 1428
Step 3: 1428 + 714 = 2142
Step 4: 2142 + 714 = 2856
Step 5: 2856 + 714 = 3570
Step 6: 3570 + 714 = 4284
Step 7: 4284 + 714 = 4998
Step 8: 4998 + 714 = 5712
Step 9: 5712 + 714 = 6426
Step 10: 6426 + 714 = 7140
Step 11: 7140 + 714 = 7854
Step 12: 7854 + 714 = 8568
Step 13: 8568 + 714 = 9282
Step 14: 9282 + 714 = 9996
Step 15: 9996 + 714 = 10710
Step 16: 10710 + 714 = 11424
Step 17: 11424 + 714 = 12138
Step 18: 12138 + 714 = 12852
Step 19: 12852 + 714 = 13566
Step 20: 13566 + 714 = 14280
Step 21: 14280 + 714 = 14994
Step 22: 14994 + 714 = 15708
Step 23: 15708 + 714 = 16422
Step 24: 16422 + 714 = 17136
Step 25: 17136 + 714 = 17850
Step 26: 17850 + 714 = 18564
Step 27: 18564 + 714 = 19278
Step 28: 19278 + 714 = 19992
Step 29: 19992 + 714 = 20706
Step 30: 20706 + 714 = 21420
Step 31: 21420 + 714 = 22134
Step 32: 22134 + 714 = 22848
Step 33: 22848 + 714 = 23562
Step 34: 23562 + 714 = 24276
Step 35: 24276 + 714 = 24990
Step 36: 24990 + 714 = 25704
Step 37: 25704 + 714 = 26418
Step 38: 26418 + 714 = 27132
Step 39: 27132 + 714 = 27846
Step 40: 27846 + 714 = 28560
Step 41: 28560 + 714 = 29274
Step 42: 29274 + 714 = 29988
Step 43: 29988 + 714 = 30702
Step 44: 30702 + 714 = 31416
Step 45: 31416 + 714 = 32130
Step 46: 32130 + 714 = 32844
Step 47: 32844 + 714 = 33558
Step 48: 33558 + 714 = 34272
Step 49: 34272 + 714 = 34986
Step 50: 34986 + 714 = 35700
Step 51: 35700 + 714 = 36414
Step 52: 36414 + 714 = 37128
Step 53: 37128 + 714 = 37842
Step 54: 37842 + 714 = 38556
Step 55: 38556 + 714 = 39270
Step 56: 39270 + 714 = 39984
Step 57: 39984 + 714 = 40698
Step 58: 40698 + 714 = 41412
Step 59: 41412 + 714 = 42126
Step 60: 42126 + 714 = 42840
Step 61: 42840 + 714 = 43554
Step 62: 43554 + 714 = 44268
Step 63: 44268 + 714 = 44982
Step 64: 44982 + 714 = 45696
Step 65: 45696 + 714 = 46410
Step 66: 46410 + 714 = 47124
Step 67: 47124 + 714 = 47838
Step 68: 47838 + 714 = 48552
Step 69: 48552 + 714 = 49266
Step 70: 49266 + 714 = 49980
Step 71: 49980 + 714 = 50694
Step 72: 50694 + 714 = 51408
Step 73: 51408 + 714 = 52122
Step 74: 52122 + 714 = 52836
Step 75: 52836 + 714 = 53550
Step 76: 53550 + 714 = 54264
Step 77: 54264 + 714 = 54978
Step 78: 54978 + 714 = 55692
Step 79: 55692 + 714 = 56406
Step 80: 56406 + 714 = 57120
Step 81: 57120 + 714 = 57834
Step 82: 57834 + 714 = 58548
Step 83: 58548 + 714 = 59262
Step 84: 59262 + 714 = 59976
Step 85: 59976 + 714 = 60690
Step 86: 60690 + 714 = 61404
Step 87: 61404 + 714 = 62118
Step 88: 62118 + 714 = 62832
Step 89: 62832 + 714 = 63546
Step 90: 63546 + 714 = 64260
Step 91: 64260 + 714 = 64974
Step 92: 64974 + 714 = 65688
Step 93: 65688 + 714 = 66402
Step 94: 66402 + 714 = 67116
Step 95: 67116 + 714 = 67830
Step 96: 67830 + 714 = 68544
Step 97: 68544 + 714 = 69258
Step 98: 69258 + 714 = 69972
Step 99: 69972 + 714 = 70686
Step 100: 70686 + 714 = 71400
Step 101: 71400 + 714 = 72114
Step 102: 72114 + 714 = 72828
Step 103: 72828 + 714 = 73542
Step 104: 73542 + 714 = 74256
Step 105: 74256 + 714 = 74970
Step 106: 74970 + 714 = 75684
Step 107: 75684 + 714 = 76398
Step 108: 76398 + 714 = 77112
Step 109: 77112 + 714 = 77826
Step 110: 77826 + 714 = 78540
Step 111: 78540 + 714 = 79254
Step 112: 79254 + 714 = 79968
Step 113: 79968 + 714 = 80682
Step 114: 80682 + 714 = 81396
Step 115: 81396 + 714 = 82110
Step 116: 82110 + 714 = 82824
Step 117: 82824 + 714 = 83538
Step 118: 83538 + 714 = 84252
Step 119: 84252 + 714 = 84966
Step 120: 84966 + 714 = 85680
Step 121: 85680 + 714 = 86394
Step 122: 86394 + 714 = 87108
Step 123: 87108 + 714 = 87822
Step 124: 87822 + 714 = 88536
Step 125: 88536 + 714 = 89250
Step 126: 89250 + 714 = 89964
Step 127: 89964 + 714 = 90678
Step 128: 90678 + 714 = 91392
Step 129: 91392 + 714 = 92106
Step 130: 92106 + 714 = 92820
Step 131: 92820 + 714 = 93534
Step 132: 93534 + 714 = 94248
Step 133: 94248 + 714 = 94962
Step 134: 94962 + 714 = 95676
Step 135: 95676 + 714 = 96390
Step 136: 96390 + 714 = 97104
Step 137: 97104 + 714 = 97818
Step 138: 97818 + 714 = 98532
Step 139: 98532 + 714 = 99246
Step 140: 99246 + 714 = 99960
Step 141: 99960 + 714 = 100674
Step 142: 100674 + 714 = 101388
Step 143: 101388 + 714 = 102102
Step 144: 102102 + 714 = 102816
Step 145: 102816 + 714 = 103530
Step 146: 103530 + 714 = 104244
Step 147: 104244 + 714 = 104958
Step 148: 104958 + 714 = 105672
Step 149: 105672 + 714 = 106386
Step 150: 106386 + 714 = 107100
Step 151: 107100 + 714 = 107814
Step 152: 107814 + 714 = 108528
Step 153: 108528 + 714 = 109242
Step 154: 109242 + 714 = 109956
Step 155: 109956 + 714 = 110670
Step 156: 110670 + 714 = 111384
Step 157: 111384 + 714 = 112098
Step 158: 112098 + 714 = 112812
Step 159: 112812 + 714 = 113526
Step 160: 113526 + 714 = 114240
Step 161: 114240 + 714 = 114954
Step 162: 114954 + 714 = 115668
Step 163: 115668 + 714 = 116382
Step 164: 116382 + 714 = 117096
Step 165: 117096 + 714 = 117810
Step 166: 117810 + 714 = 118524
Step 167: 118524 + 714 = 119238
Step 168: 119238 + 714 = 119952
Step 169: 119952 + 714 = 120666
Step 170: 120666 + 714 = 121380
Step 171: 121380 + 714 = 122094
Step 172: 122094 + 714 = 122808
Step 173: 122808 + 714 = 123522
Step 174: 123522 + 714 = 124236
Step 175: 124236 + 714 = 124950
Step 176: 124950 + 714 = 125664
Step 177: 125664 + 714 = 126378
Step 178: 126378 + 714 = 127092
Step 179: 127092 + 714 = 127806
Step 180: 127806 + 714 = 128520
Step 181: 128520 + 714 = 129234
Step 182: 129234 + 714 = 129948
Step 183: 129948 + 714 = 130662
Step 184: 130662 + 714 = 131376
Step 185: 131376 + 714 = 132090
Step 186: 132090 + 714 = 132804
Step 187: 132804 + 714 = 133518
Step 188: 133518 + 714 = 134232
Step 189: 134232 + 714 = 134946
Step 190: 134946 + 714 = 135660
Step 191: 135660 + 714 = 136374
Step 192: 136374 + 714 = 137088
Step 193: 137088 + 714 = 137802
Step 194: 137802 + 714 = 138516
Step 195: 138516 + 714 = 139230
Step 196: 139230 + 714 = 139944
Step 197: 139944 + 714 = 140658
Step 198: 140658 + 714 = 141372
Step 199: 141372 + 714 = 142086
Step 200: 142086 + 714 = 142800
Step 201: 142800 + 714 = 143514
Step 202: 143514 + 714 = 144228
Step 203: 144228 + 714 = 144942
Step 204: 144942 + 714 = 145656
Step 205: 145656 + 714 = 146370
Step 206: 146370 + 714 = 147084
Step 207: 147084 + 714 = 147798
Step 208: 147798 + 714 = 148512
Step 209: 148512 + 714 = 149226
Step 210: 149226 + 714 = 149940
Step 211: 149940 + 714 = 150654
Step 212: 150654 + 714 = 151368
Step 213: 151368 + 714 = 152082
Step 214: 152082 + 714 = 152796
Step 215: 152796 + 714 = 153510
Step 216: 153510 + 714 = 154224
Step 217: 154224 + 714 = 154938
Step 218: 154938 + 714 = 155652
Step 219: 155652 + 714 = 156366
Step 220: 156366 + 714 = 157080
Step 221: 157080 + 714 = 157794
Step 222: 157794 + 714 = 158508
Step 223: 158508 + 714 = 159222
Step 224: 159222 + 714 = 159936
Step 225: 159936 + 714 = 160650
Step 226: 160650 + 714 = 161364
Step 227: 161364 + 714 = 162078
Step 228: 162078 + 714 = 162792
Step 229: 162792 + 714 = 163506
Step 230: 163506 + 714 = 164220
Step 231: 164220 + 714 = 164934
Step 232: 164934 + 714 = 165648
Step 233: 165648 + 714 = 166362
Step 234: 166362 + 714 = 167076
Step 235: 167076 + 714 = 167790
Step 236: 167790 + 714 = 168504
Step 237: 168504 + 714 = 169218
Step 238: 169218 + 714 = 169932
Step 239: 169932 + 714 = 170646
Step 240: 170646 + 714 = 171360
Step 241: 171360 + 714 = 172074
Step 242: 172074 + 714 = 172788
Step 243: 172788 + 714 = 173502
Step 244: 173502 + 714 = 174216
Step 245: 174216 + 714 = 174930
Step 246: 174930 + 714 = 175644
Step 247: 175644 + 714 = 176358
Step 248: 176358 + 714 = 177072
Step 249: 177072 + 714 = 177786
Step 250: 177786 + 714 = 178500
Step 251: 178500 + 714 = 179214
Step 252: 179214 + 714 = 179928
Step 253: 179928 + 714 = 180642
Step 254: 180642 + 714 = 181356
Step 255: 181356 + 714 = 182070
Step 256: 182070 + 714 = 182784
Step 257: 182784 + 714 = 183498
Step 258: 183498 + 714 = 184212
Step 259: 184212 + 714 = 184926
Step 260: 184926 + 714 = 185640
Step 261: 185640 + 714 = 186354
Step 262: 186354 + 714 = 187068
Step 263: 187068 + 714 = 187782
Step 264: 187782 + 714 = 188496
Step 265: 188496 + 714 = 189210
Step 266: 189210 + 714 = 189924
Step 267: 189924 + 714 = 190638
Step 268: 190638 + 714 = 191352
Step 269: 191352 + 714 = 192066
Step 270: 192066 + 714 = 192780
Step 271: 192780 + 714 = 193494
Step 272: 193494 + 714 = 194208
Step 273: 194208 + 714 = 194922
Step 274: 194922 + 714 = 195636
Step 275: 195636 + 714 = 196350
Step 276: 196350 + 714 = 197064
Step 277: 197064 + 714 = 197778
Step 278: 197778 + 714 = 198492
Step 279: 198492 + 714 = 199206
Step 280: 199206 + 714 = 199920
Step 281: 199920 + 714 = 200634
Step 282: 200634 + 714 = 201348
Step 283: 201348 + 714 = 202062
Step 284: 202062 + 714 = 202776
Step 285: 202776 + 714 = 203490
Step 286: 203490 + 714 = 204204
Step 287: 204204 + 714 = 204918
Step 288: 204918 + 714 = 205632
Step 289: 205632 + 714 = 206346
Step 290: 206346 + 714 = 207060
Step 291: 207060 + 714 = 207774
Step 292: 207774 + 714 = 208488
Step 293: 208488 + 714 = 209202
Step 294: 209202 + 714 = 209916
Step 295: 209916 + 714 = 210630
Step 296: 210630 + 714 = 211344
Step 297: 211344 + 714 = 212058
Step 298: 212058 + 714 = 212772
Step 299: 212772 + 714 = 213486
Step 300: 213486 + 714 = 214200
Step 301: 214200 + 714 = 214914
Step 302: 214914 + 714 = 215628
Step 303: 215628 + 714 = 216342
Step 304: 216342 + 714 = 217056
Step 305: 217056 + 714 = 217770
Step 306: 217770 + 714 = 218484
Step 307: 218484 + 714 = 219198
Step 308: 219198 + 714 = 219912
Step 309: 219912 + 714 = 220626
Step 310: 220626 + 714 = 221340
Step 311: 221340 + 714 = 222054
Step 312: 222054 + 714 = 222768
Step 313: 222768 + 714 = 223482
Step 314: 223482 + 714 = 224196
Step 315: 224196 + 714 = 224910
Step 316: 224910 + 714 = 225624
Step 317: 225624 + 714 = 226338
Step 318: 226338 + 714 = 227052
Step 319: 227052 + 714 = 227766
Step 320: 227766 + 714 = 228480
Step 321: 228480 + 714 = 229194
Step 322: 229194 + 714 = 229908
Step 323: 229908 + 714 = 230622
Step 324: 230622 + 714 = 231336
Step 325: 231336 + 714 = 232050
Step 326: 232050 + 714 = 232764
Step 327: 232764 + 714 = 233478
Step 328: 233478 + 714 = 234192
Step 329: 234192 + 714 = 234906
Step 330: 234906 + 714 = 235620
Step 331: 235620 + 714 = 236334
Step 332: 236334 + 714 = 237048
Step 333: 237048 + 714 = 237762
Step 334: 237762 + 714 = 238476
Step 335: 238476 + 714 = 239190
Step 336: 239190 + 714 = 239904
Step 337: 239904 + 714 = 240618
Step 338: 240618 + 714 = 241332
Step 339: 241332 + 714 = 242046
Step 340: 242046 + 714 = 242760
Step 341: 242760 + 714 = 243474
Step 342: 243474 + 714 = 244188
Step 343: 244188 + 714 = 244902
Step 344: 244902 + 714 = 245616
Step 345: 245616 + 714 = 246330
Step 346: 246330 + 714 = 247044
Step 347: 247044 + 714 = 247758
Step 348: 247758 + 714 = 248472
Step 349: 248472 + 714 = 249186
Step 350: 249186 + 714 = 249900
Step 351: 249900 + 714 = 250614
Step 352: 250614 + 714 = 251328
Step 353: 251328 + 714 = 252042
Step 354: 252042 + 714 = 252756
Step 355: 252756 + 714 = 253470
Step 356: 253470 + 714 = 254184
Step 357: 254184 + 714 = 254898
Step 358: 254898 + 714 = 255612
Step 359: 255612 + 714 = 256326
Step 360: 256326 + 714 = 257040
Step 361: 257040 + 714 = 257754
Step 362: 257754 + 714 = 258468
Step 363: 258468 + 714 = 259182
Step 364: 259182 + 714 = 259896
Step 365: 259896 + 714 = 260610
Step 366: 260610 + 714 = 261324
Step 367: 261324 + 714 = 262038
Step 368: 262038 + 714 = 262752
Step 369: 262752 + 714 = 263466
Step 370: 263466 + 714 = 264180
Step 371: 264180 + 714 = 264894
Step 372: 264894 + 714 = 265608
Step 373: 265608 + 714 = 266322
Step 374: 266322 + 714 = 267036
Step 375: 267036 + 714 = 267750
Step 376: 267750 + 714 = 268464
Step 377: 268464 + 714 = 269178
Step 378: 269178 + 714 = 269892
Step 379: 269892 + 714 = 270606
Step 380: 270606 + 714 = 271320
Step 381: 271320 + 714 = 272034
Step 382: 272034 + 714 = 272748
Step 383: 272748 + 714 = 273462
Step 384: 273462 + 714 = 274176
Step 385: 274176 + 714 = 274890
Step 386: 274890 + 714 = 275604
Step 387: 275604 + 714 = 276318
Step 388: 276318 + 714 = 277032
Step 389: 277032 + 714 = 277746
Step 390: 277746 + 714 = 278460

So, 714*390 = 278460