OK, let's work through this together. We're starting with 540 and we're going to multiply it by 397, which means we add 540 to itself 397 times.
Step 1: 0 + 540 = 540
Step 2: 540 + 540 = 1080
Step 3: 1080 + 540 = 1620
Step 4: 1620 + 540 = 2160
Step 5: 2160 + 540 = 2700
Step 6: 2700 + 540 = 3240
Step 7: 3240 + 540 = 3780
Step 8: 3780 + 540 = 4320
Step 9: 4320 + 540 = 4860
Step 10: 4860 + 540 = 5400
Step 11: 5400 + 540 = 5940
Step 12: 5940 + 540 = 6480
Step 13: 6480 + 540 = 7020
Step 14: 7020 + 540 = 7560
Step 15: 7560 + 540 = 8100
Step 16: 8100 + 540 = 8640
Step 17: 8640 + 540 = 9180
Step 18: 9180 + 540 = 9720
Step 19: 9720 + 540 = 10260
Step 20: 10260 + 540 = 10800
Step 21: 10800 + 540 = 11340
Step 22: 11340 + 540 = 11880
Step 23: 11880 + 540 = 12420
Step 24: 12420 + 540 = 12960
Step 25: 12960 + 540 = 13500
Step 26: 13500 + 540 = 14040
Step 27: 14040 + 540 = 14580
Step 28: 14580 + 540 = 15120
Step 29: 15120 + 540 = 15660
Step 30: 15660 + 540 = 16200
Step 31: 16200 + 540 = 16740
Step 32: 16740 + 540 = 17280
Step 33: 17280 + 540 = 17820
Step 34: 17820 + 540 = 18360
Step 35: 18360 + 540 = 18900
Step 36: 18900 + 540 = 19440
Step 37: 19440 + 540 = 19980
Step 38: 19980 + 540 = 20520
Step 39: 20520 + 540 = 21060
Step 40: 21060 + 540 = 21600
Step 41: 21600 + 540 = 22140
Step 42: 22140 + 540 = 22680
Step 43: 22680 + 540 = 23220
Step 44: 23220 + 540 = 23760
Step 45: 23760 + 540 = 24300
Step 46: 24300 + 540 = 24840
Step 47: 24840 + 540 = 25380
Step 48: 25380 + 540 = 25920
Step 49: 25920 + 540 = 26460
Step 50: 26460 + 540 = 27000
Step 51: 27000 + 540 = 27540
Step 52: 27540 + 540 = 28080
Step 53: 28080 + 540 = 28620
Step 54: 28620 + 540 = 29160
Step 55: 29160 + 540 = 29700
Step 56: 29700 + 540 = 30240
Step 57: 30240 + 540 = 30780
Step 58: 30780 + 540 = 31320
Step 59: 31320 + 540 = 31860
Step 60: 31860 + 540 = 32400
Step 61: 32400 + 540 = 32940
Step 62: 32940 + 540 = 33480
Step 63: 33480 + 540 = 34020
Step 64: 34020 + 540 = 34560
Step 65: 34560 + 540 = 35100
Step 66: 35100 + 540 = 35640
Step 67: 35640 + 540 = 36180
Step 68: 36180 + 540 = 36720
Step 69: 36720 + 540 = 37260
Step 70: 37260 + 540 = 37800
Step 71: 37800 + 540 = 38340
Step 72: 38340 + 540 = 38880
Step 73: 38880 + 540 = 39420
Step 74: 39420 + 540 = 39960
Step 75: 39960 + 540 = 40500
Step 76: 40500 + 540 = 41040
Step 77: 41040 + 540 = 41580
Step 78: 41580 + 540 = 42120
Step 79: 42120 + 540 = 42660
Step 80: 42660 + 540 = 43200
Step 81: 43200 + 540 = 43740
Step 82: 43740 + 540 = 44280
Step 83: 44280 + 540 = 44820
Step 84: 44820 + 540 = 45360
Step 85: 45360 + 540 = 45900
Step 86: 45900 + 540 = 46440
Step 87: 46440 + 540 = 46980
Step 88: 46980 + 540 = 47520
Step 89: 47520 + 540 = 48060
Step 90: 48060 + 540 = 48600
Step 91: 48600 + 540 = 49140
Step 92: 49140 + 540 = 49680
Step 93: 49680 + 540 = 50220
Step 94: 50220 + 540 = 50760
Step 95: 50760 + 540 = 51300
Step 96: 51300 + 540 = 51840
Step 97: 51840 + 540 = 52380
Step 98: 52380 + 540 = 52920
Step 99: 52920 + 540 = 53460
Step 100: 53460 + 540 = 54000
Step 101: 54000 + 540 = 54540
Step 102: 54540 + 540 = 55080
Step 103: 55080 + 540 = 55620
Step 104: 55620 + 540 = 56160
Step 105: 56160 + 540 = 56700
Step 106: 56700 + 540 = 57240
Step 107: 57240 + 540 = 57780
Step 108: 57780 + 540 = 58320
Step 109: 58320 + 540 = 58860
Step 110: 58860 + 540 = 59400
Step 111: 59400 + 540 = 59940
Step 112: 59940 + 540 = 60480
Step 113: 60480 + 540 = 61020
Step 114: 61020 + 540 = 61560
Step 115: 61560 + 540 = 62100
Step 116: 62100 + 540 = 62640
Step 117: 62640 + 540 = 63180
Step 118: 63180 + 540 = 63720
Step 119: 63720 + 540 = 64260
Step 120: 64260 + 540 = 64800
Step 121: 64800 + 540 = 65340
Step 122: 65340 + 540 = 65880
Step 123: 65880 + 540 = 66420
Step 124: 66420 + 540 = 66960
Step 125: 66960 + 540 = 67500
Step 126: 67500 + 540 = 68040
Step 127: 68040 + 540 = 68580
Step 128: 68580 + 540 = 69120
Step 129: 69120 + 540 = 69660
Step 130: 69660 + 540 = 70200
Step 131: 70200 + 540 = 70740
Step 132: 70740 + 540 = 71280
Step 133: 71280 + 540 = 71820
Step 134: 71820 + 540 = 72360
Step 135: 72360 + 540 = 72900
Step 136: 72900 + 540 = 73440
Step 137: 73440 + 540 = 73980
Step 138: 73980 + 540 = 74520
Step 139: 74520 + 540 = 75060
Step 140: 75060 + 540 = 75600
Step 141: 75600 + 540 = 76140
Step 142: 76140 + 540 = 76680
Step 143: 76680 + 540 = 77220
Step 144: 77220 + 540 = 77760
Step 145: 77760 + 540 = 78300
Step 146: 78300 + 540 = 78840
Step 147: 78840 + 540 = 79380
Step 148: 79380 + 540 = 79920
Step 149: 79920 + 540 = 80460
Step 150: 80460 + 540 = 81000
Step 151: 81000 + 540 = 81540
Step 152: 81540 + 540 = 82080
Step 153: 82080 + 540 = 82620
Step 154: 82620 + 540 = 83160
Step 155: 83160 + 540 = 83700
Step 156: 83700 + 540 = 84240
Step 157: 84240 + 540 = 84780
Step 158: 84780 + 540 = 85320
Step 159: 85320 + 540 = 85860
Step 160: 85860 + 540 = 86400
Step 161: 86400 + 540 = 86940
Step 162: 86940 + 540 = 87480
Step 163: 87480 + 540 = 88020
Step 164: 88020 + 540 = 88560
Step 165: 88560 + 540 = 89100
Step 166: 89100 + 540 = 89640
Step 167: 89640 + 540 = 90180
Step 168: 90180 + 540 = 90720
Step 169: 90720 + 540 = 91260
Step 170: 91260 + 540 = 91800
Step 171: 91800 + 540 = 92340
Step 172: 92340 + 540 = 92880
Step 173: 92880 + 540 = 93420
Step 174: 93420 + 540 = 93960
Step 175: 93960 + 540 = 94500
Step 176: 94500 + 540 = 95040
Step 177: 95040 + 540 = 95580
Step 178: 95580 + 540 = 96120
Step 179: 96120 + 540 = 96660
Step 180: 96660 + 540 = 97200
Step 181: 97200 + 540 = 97740
Step 182: 97740 + 540 = 98280
Step 183: 98280 + 540 = 98820
Step 184: 98820 + 540 = 99360
Step 185: 99360 + 540 = 99900
Step 186: 99900 + 540 = 100440
Step 187: 100440 + 540 = 100980
Step 188: 100980 + 540 = 101520
Step 189: 101520 + 540 = 102060
Step 190: 102060 + 540 = 102600
Step 191: 102600 + 540 = 103140
Step 192: 103140 + 540 = 103680
Step 193: 103680 + 540 = 104220
Step 194: 104220 + 540 = 104760
Step 195: 104760 + 540 = 105300
Step 196: 105300 + 540 = 105840
Step 197: 105840 + 540 = 106380
Step 198: 106380 + 540 = 106920
Step 199: 106920 + 540 = 107460
Step 200: 107460 + 540 = 108000
Step 201: 108000 + 540 = 108540
Step 202: 108540 + 540 = 109080
Step 203: 109080 + 540 = 109620
Step 204: 109620 + 540 = 110160
Step 205: 110160 + 540 = 110700
Step 206: 110700 + 540 = 111240
Step 207: 111240 + 540 = 111780
Step 208: 111780 + 540 = 112320
Step 209: 112320 + 540 = 112860
Step 210: 112860 + 540 = 113400
Step 211: 113400 + 540 = 113940
Step 212: 113940 + 540 = 114480
Step 213: 114480 + 540 = 115020
Step 214: 115020 + 540 = 115560
Step 215: 115560 + 540 = 116100
Step 216: 116100 + 540 = 116640
Step 217: 116640 + 540 = 117180
Step 218: 117180 + 540 = 117720
Step 219: 117720 + 540 = 118260
Step 220: 118260 + 540 = 118800
Step 221: 118800 + 540 = 119340
Step 222: 119340 + 540 = 119880
Step 223: 119880 + 540 = 120420
Step 224: 120420 + 540 = 120960
Step 225: 120960 + 540 = 121500
Step 226: 121500 + 540 = 122040
Step 227: 122040 + 540 = 122580
Step 228: 122580 + 540 = 123120
Step 229: 123120 + 540 = 123660
Step 230: 123660 + 540 = 124200
Step 231: 124200 + 540 = 124740
Step 232: 124740 + 540 = 125280
Step 233: 125280 + 540 = 125820
Step 234: 125820 + 540 = 126360
Step 235: 126360 + 540 = 126900
Step 236: 126900 + 540 = 127440
Step 237: 127440 + 540 = 127980
Step 238: 127980 + 540 = 128520
Step 239: 128520 + 540 = 129060
Step 240: 129060 + 540 = 129600
Step 241: 129600 + 540 = 130140
Step 242: 130140 + 540 = 130680
Step 243: 130680 + 540 = 131220
Step 244: 131220 + 540 = 131760
Step 245: 131760 + 540 = 132300
Step 246: 132300 + 540 = 132840
Step 247: 132840 + 540 = 133380
Step 248: 133380 + 540 = 133920
Step 249: 133920 + 540 = 134460
Step 250: 134460 + 540 = 135000
Step 251: 135000 + 540 = 135540
Step 252: 135540 + 540 = 136080
Step 253: 136080 + 540 = 136620
Step 254: 136620 + 540 = 137160
Step 255: 137160 + 540 = 137700
Step 256: 137700 + 540 = 138240
Step 257: 138240 + 540 = 138780
Step 258: 138780 + 540 = 139320
Step 259: 139320 + 540 = 139860
Step 260: 139860 + 540 = 140400
Step 261: 140400 + 540 = 140940
Step 262: 140940 + 540 = 141480
Step 263: 141480 + 540 = 142020
Step 264: 142020 + 540 = 142560
Step 265: 142560 + 540 = 143100
Step 266: 143100 + 540 = 143640
Step 267: 143640 + 540 = 144180
Step 268: 144180 + 540 = 144720
Step 269: 144720 + 540 = 145260
Step 270: 145260 + 540 = 145800
Step 271: 145800 + 540 = 146340
Step 272: 146340 + 540 = 146880
Step 273: 146880 + 540 = 147420
Step 274: 147420 + 540 = 147960
Step 275: 147960 + 540 = 148500
Step 276: 148500 + 540 = 149040
Step 277: 149040 + 540 = 149580
Step 278: 149580 + 540 = 150120
Step 279: 150120 + 540 = 150660
Step 280: 150660 + 540 = 151200
Step 281: 151200 + 540 = 151740
Step 282: 151740 + 540 = 152280
Step 283: 152280 + 540 = 152820
Step 284: 152820 + 540 = 153360
Step 285: 153360 + 540 = 153900
Step 286: 153900 + 540 = 154440
Step 287: 154440 + 540 = 154980
Step 288: 154980 + 540 = 155520
Step 289: 155520 + 540 = 156060
Step 290: 156060 + 540 = 156600
Step 291: 156600 + 540 = 157140
Step 292: 157140 + 540 = 157680
Step 293: 157680 + 540 = 158220
Step 294: 158220 + 540 = 158760
Step 295: 158760 + 540 = 159300
Step 296: 159300 + 540 = 159840
Step 297: 159840 + 540 = 160380
Step 298: 160380 + 540 = 160920
Step 299: 160920 + 540 = 161460
Step 300: 161460 + 540 = 162000
Step 301: 162000 + 540 = 162540
Step 302: 162540 + 540 = 163080
Step 303: 163080 + 540 = 163620
Step 304: 163620 + 540 = 164160
Step 305: 164160 + 540 = 164700
Step 306: 164700 + 540 = 165240
Step 307: 165240 + 540 = 165780
Step 308: 165780 + 540 = 166320
Step 309: 166320 + 540 = 166860
Step 310: 166860 + 540 = 167400
Step 311: 167400 + 540 = 167940
Step 312: 167940 + 540 = 168480
Step 313: 168480 + 540 = 169020
Step 314: 169020 + 540 = 169560
Step 315: 169560 + 540 = 170100
Step 316: 170100 + 540 = 170640
Step 317: 170640 + 540 = 171180
Step 318: 171180 + 540 = 171720
Step 319: 171720 + 540 = 172260
Step 320: 172260 + 540 = 172800
Step 321: 172800 + 540 = 173340
Step 322: 173340 + 540 = 173880
Step 323: 173880 + 540 = 174420
Step 324: 174420 + 540 = 174960
Step 325: 174960 + 540 = 175500
Step 326: 175500 + 540 = 176040
Step 327: 176040 + 540 = 176580
Step 328: 176580 + 540 = 177120
Step 329: 177120 + 540 = 177660
Step 330: 177660 + 540 = 178200
Step 331: 178200 + 540 = 178740
Step 332: 178740 + 540 = 179280
Step 333: 179280 + 540 = 179820
Step 334: 179820 + 540 = 180360
Step 335: 180360 + 540 = 180900
Step 336: 180900 + 540 = 181440
Step 337: 181440 + 540 = 181980
Step 338: 181980 + 540 = 182520
Step 339: 182520 + 540 = 183060
Step 340: 183060 + 540 = 183600
Step 341: 183600 + 540 = 184140
Step 342: 184140 + 540 = 184680
Step 343: 184680 + 540 = 185220
Step 344: 185220 + 540 = 185760
Step 345: 185760 + 540 = 186300
Step 346: 186300 + 540 = 186840
Step 347: 186840 + 540 = 187380
Step 348: 187380 + 540 = 187920
Step 349: 187920 + 540 = 188460
Step 350: 188460 + 540 = 189000
Step 351: 189000 + 540 = 189540
Step 352: 189540 + 540 = 190080
Step 353: 190080 + 540 = 190620
Step 354: 190620 + 540 = 191160
Step 355: 191160 + 540 = 191700
Step 356: 191700 + 540 = 192240
Step 357: 192240 + 540 = 192780
Step 358: 192780 + 540 = 193320
Step 359: 193320 + 540 = 193860
Step 360: 193860 + 540 = 194400
Step 361: 194400 + 540 = 194940
Step 362: 194940 + 540 = 195480
Step 363: 195480 + 540 = 196020
Step 364: 196020 + 540 = 196560
Step 365: 196560 + 540 = 197100
Step 366: 197100 + 540 = 197640
Step 367: 197640 + 540 = 198180
Step 368: 198180 + 540 = 198720
Step 369: 198720 + 540 = 199260
Step 370: 199260 + 540 = 199800
Step 371: 199800 + 540 = 200340
Step 372: 200340 + 540 = 200880
Step 373: 200880 + 540 = 201420
Step 374: 201420 + 540 = 201960
Step 375: 201960 + 540 = 202500
Step 376: 202500 + 540 = 203040
Step 377: 203040 + 540 = 203580
Step 378: 203580 + 540 = 204120
Step 379: 204120 + 540 = 204660
Step 380: 204660 + 540 = 205200
Step 381: 205200 + 540 = 205740
Step 382: 205740 + 540 = 206280
Step 383: 206280 + 540 = 206820
Step 384: 206820 + 540 = 207360
Step 385: 207360 + 540 = 207900
Step 386: 207900 + 540 = 208440
Step 387: 208440 + 540 = 208980
Step 388: 208980 + 540 = 209520
Step 389: 209520 + 540 = 210060
Step 390: 210060 + 540 = 210600
Step 391: 210600 + 540 = 211140
Step 392: 211140 + 540 = 211680
Step 393: 211680 + 540 = 212220
Step 394: 212220 + 540 = 212760
Step 395: 212760 + 540 = 213300
Step 396: 213300 + 540 = 213840
Step 397: 213840 + 540 = 214380

So, 540*397 = 214380