Alright, let's solve this math problem step by step. First, we have the number 856. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 393. So, we're going to take the number 856 and add it to itself 393 times.
Step 1: 0 + 856 = 856
Step 2: 856 + 856 = 1712
Step 3: 1712 + 856 = 2568
Step 4: 2568 + 856 = 3424
Step 5: 3424 + 856 = 4280
Step 6: 4280 + 856 = 5136
Step 7: 5136 + 856 = 5992
Step 8: 5992 + 856 = 6848
Step 9: 6848 + 856 = 7704
Step 10: 7704 + 856 = 8560
Step 11: 8560 + 856 = 9416
Step 12: 9416 + 856 = 10272
Step 13: 10272 + 856 = 11128
Step 14: 11128 + 856 = 11984
Step 15: 11984 + 856 = 12840
Step 16: 12840 + 856 = 13696
Step 17: 13696 + 856 = 14552
Step 18: 14552 + 856 = 15408
Step 19: 15408 + 856 = 16264
Step 20: 16264 + 856 = 17120
Step 21: 17120 + 856 = 17976
Step 22: 17976 + 856 = 18832
Step 23: 18832 + 856 = 19688
Step 24: 19688 + 856 = 20544
Step 25: 20544 + 856 = 21400
Step 26: 21400 + 856 = 22256
Step 27: 22256 + 856 = 23112
Step 28: 23112 + 856 = 23968
Step 29: 23968 + 856 = 24824
Step 30: 24824 + 856 = 25680
Step 31: 25680 + 856 = 26536
Step 32: 26536 + 856 = 27392
Step 33: 27392 + 856 = 28248
Step 34: 28248 + 856 = 29104
Step 35: 29104 + 856 = 29960
Step 36: 29960 + 856 = 30816
Step 37: 30816 + 856 = 31672
Step 38: 31672 + 856 = 32528
Step 39: 32528 + 856 = 33384
Step 40: 33384 + 856 = 34240
Step 41: 34240 + 856 = 35096
Step 42: 35096 + 856 = 35952
Step 43: 35952 + 856 = 36808
Step 44: 36808 + 856 = 37664
Step 45: 37664 + 856 = 38520
Step 46: 38520 + 856 = 39376
Step 47: 39376 + 856 = 40232
Step 48: 40232 + 856 = 41088
Step 49: 41088 + 856 = 41944
Step 50: 41944 + 856 = 42800
Step 51: 42800 + 856 = 43656
Step 52: 43656 + 856 = 44512
Step 53: 44512 + 856 = 45368
Step 54: 45368 + 856 = 46224
Step 55: 46224 + 856 = 47080
Step 56: 47080 + 856 = 47936
Step 57: 47936 + 856 = 48792
Step 58: 48792 + 856 = 49648
Step 59: 49648 + 856 = 50504
Step 60: 50504 + 856 = 51360
Step 61: 51360 + 856 = 52216
Step 62: 52216 + 856 = 53072
Step 63: 53072 + 856 = 53928
Step 64: 53928 + 856 = 54784
Step 65: 54784 + 856 = 55640
Step 66: 55640 + 856 = 56496
Step 67: 56496 + 856 = 57352
Step 68: 57352 + 856 = 58208
Step 69: 58208 + 856 = 59064
Step 70: 59064 + 856 = 59920
Step 71: 59920 + 856 = 60776
Step 72: 60776 + 856 = 61632
Step 73: 61632 + 856 = 62488
Step 74: 62488 + 856 = 63344
Step 75: 63344 + 856 = 64200
Step 76: 64200 + 856 = 65056
Step 77: 65056 + 856 = 65912
Step 78: 65912 + 856 = 66768
Step 79: 66768 + 856 = 67624
Step 80: 67624 + 856 = 68480
Step 81: 68480 + 856 = 69336
Step 82: 69336 + 856 = 70192
Step 83: 70192 + 856 = 71048
Step 84: 71048 + 856 = 71904
Step 85: 71904 + 856 = 72760
Step 86: 72760 + 856 = 73616
Step 87: 73616 + 856 = 74472
Step 88: 74472 + 856 = 75328
Step 89: 75328 + 856 = 76184
Step 90: 76184 + 856 = 77040
Step 91: 77040 + 856 = 77896
Step 92: 77896 + 856 = 78752
Step 93: 78752 + 856 = 79608
Step 94: 79608 + 856 = 80464
Step 95: 80464 + 856 = 81320
Step 96: 81320 + 856 = 82176
Step 97: 82176 + 856 = 83032
Step 98: 83032 + 856 = 83888
Step 99: 83888 + 856 = 84744
Step 100: 84744 + 856 = 85600
Step 101: 85600 + 856 = 86456
Step 102: 86456 + 856 = 87312
Step 103: 87312 + 856 = 88168
Step 104: 88168 + 856 = 89024
Step 105: 89024 + 856 = 89880
Step 106: 89880 + 856 = 90736
Step 107: 90736 + 856 = 91592
Step 108: 91592 + 856 = 92448
Step 109: 92448 + 856 = 93304
Step 110: 93304 + 856 = 94160
Step 111: 94160 + 856 = 95016
Step 112: 95016 + 856 = 95872
Step 113: 95872 + 856 = 96728
Step 114: 96728 + 856 = 97584
Step 115: 97584 + 856 = 98440
Step 116: 98440 + 856 = 99296
Step 117: 99296 + 856 = 100152
Step 118: 100152 + 856 = 101008
Step 119: 101008 + 856 = 101864
Step 120: 101864 + 856 = 102720
Step 121: 102720 + 856 = 103576
Step 122: 103576 + 856 = 104432
Step 123: 104432 + 856 = 105288
Step 124: 105288 + 856 = 106144
Step 125: 106144 + 856 = 107000
Step 126: 107000 + 856 = 107856
Step 127: 107856 + 856 = 108712
Step 128: 108712 + 856 = 109568
Step 129: 109568 + 856 = 110424
Step 130: 110424 + 856 = 111280
Step 131: 111280 + 856 = 112136
Step 132: 112136 + 856 = 112992
Step 133: 112992 + 856 = 113848
Step 134: 113848 + 856 = 114704
Step 135: 114704 + 856 = 115560
Step 136: 115560 + 856 = 116416
Step 137: 116416 + 856 = 117272
Step 138: 117272 + 856 = 118128
Step 139: 118128 + 856 = 118984
Step 140: 118984 + 856 = 119840
Step 141: 119840 + 856 = 120696
Step 142: 120696 + 856 = 121552
Step 143: 121552 + 856 = 122408
Step 144: 122408 + 856 = 123264
Step 145: 123264 + 856 = 124120
Step 146: 124120 + 856 = 124976
Step 147: 124976 + 856 = 125832
Step 148: 125832 + 856 = 126688
Step 149: 126688 + 856 = 127544
Step 150: 127544 + 856 = 128400
Step 151: 128400 + 856 = 129256
Step 152: 129256 + 856 = 130112
Step 153: 130112 + 856 = 130968
Step 154: 130968 + 856 = 131824
Step 155: 131824 + 856 = 132680
Step 156: 132680 + 856 = 133536
Step 157: 133536 + 856 = 134392
Step 158: 134392 + 856 = 135248
Step 159: 135248 + 856 = 136104
Step 160: 136104 + 856 = 136960
Step 161: 136960 + 856 = 137816
Step 162: 137816 + 856 = 138672
Step 163: 138672 + 856 = 139528
Step 164: 139528 + 856 = 140384
Step 165: 140384 + 856 = 141240
Step 166: 141240 + 856 = 142096
Step 167: 142096 + 856 = 142952
Step 168: 142952 + 856 = 143808
Step 169: 143808 + 856 = 144664
Step 170: 144664 + 856 = 145520
Step 171: 145520 + 856 = 146376
Step 172: 146376 + 856 = 147232
Step 173: 147232 + 856 = 148088
Step 174: 148088 + 856 = 148944
Step 175: 148944 + 856 = 149800
Step 176: 149800 + 856 = 150656
Step 177: 150656 + 856 = 151512
Step 178: 151512 + 856 = 152368
Step 179: 152368 + 856 = 153224
Step 180: 153224 + 856 = 154080
Step 181: 154080 + 856 = 154936
Step 182: 154936 + 856 = 155792
Step 183: 155792 + 856 = 156648
Step 184: 156648 + 856 = 157504
Step 185: 157504 + 856 = 158360
Step 186: 158360 + 856 = 159216
Step 187: 159216 + 856 = 160072
Step 188: 160072 + 856 = 160928
Step 189: 160928 + 856 = 161784
Step 190: 161784 + 856 = 162640
Step 191: 162640 + 856 = 163496
Step 192: 163496 + 856 = 164352
Step 193: 164352 + 856 = 165208
Step 194: 165208 + 856 = 166064
Step 195: 166064 + 856 = 166920
Step 196: 166920 + 856 = 167776
Step 197: 167776 + 856 = 168632
Step 198: 168632 + 856 = 169488
Step 199: 169488 + 856 = 170344
Step 200: 170344 + 856 = 171200
Step 201: 171200 + 856 = 172056
Step 202: 172056 + 856 = 172912
Step 203: 172912 + 856 = 173768
Step 204: 173768 + 856 = 174624
Step 205: 174624 + 856 = 175480
Step 206: 175480 + 856 = 176336
Step 207: 176336 + 856 = 177192
Step 208: 177192 + 856 = 178048
Step 209: 178048 + 856 = 178904
Step 210: 178904 + 856 = 179760
Step 211: 179760 + 856 = 180616
Step 212: 180616 + 856 = 181472
Step 213: 181472 + 856 = 182328
Step 214: 182328 + 856 = 183184
Step 215: 183184 + 856 = 184040
Step 216: 184040 + 856 = 184896
Step 217: 184896 + 856 = 185752
Step 218: 185752 + 856 = 186608
Step 219: 186608 + 856 = 187464
Step 220: 187464 + 856 = 188320
Step 221: 188320 + 856 = 189176
Step 222: 189176 + 856 = 190032
Step 223: 190032 + 856 = 190888
Step 224: 190888 + 856 = 191744
Step 225: 191744 + 856 = 192600
Step 226: 192600 + 856 = 193456
Step 227: 193456 + 856 = 194312
Step 228: 194312 + 856 = 195168
Step 229: 195168 + 856 = 196024
Step 230: 196024 + 856 = 196880
Step 231: 196880 + 856 = 197736
Step 232: 197736 + 856 = 198592
Step 233: 198592 + 856 = 199448
Step 234: 199448 + 856 = 200304
Step 235: 200304 + 856 = 201160
Step 236: 201160 + 856 = 202016
Step 237: 202016 + 856 = 202872
Step 238: 202872 + 856 = 203728
Step 239: 203728 + 856 = 204584
Step 240: 204584 + 856 = 205440
Step 241: 205440 + 856 = 206296
Step 242: 206296 + 856 = 207152
Step 243: 207152 + 856 = 208008
Step 244: 208008 + 856 = 208864
Step 245: 208864 + 856 = 209720
Step 246: 209720 + 856 = 210576
Step 247: 210576 + 856 = 211432
Step 248: 211432 + 856 = 212288
Step 249: 212288 + 856 = 213144
Step 250: 213144 + 856 = 214000
Step 251: 214000 + 856 = 214856
Step 252: 214856 + 856 = 215712
Step 253: 215712 + 856 = 216568
Step 254: 216568 + 856 = 217424
Step 255: 217424 + 856 = 218280
Step 256: 218280 + 856 = 219136
Step 257: 219136 + 856 = 219992
Step 258: 219992 + 856 = 220848
Step 259: 220848 + 856 = 221704
Step 260: 221704 + 856 = 222560
Step 261: 222560 + 856 = 223416
Step 262: 223416 + 856 = 224272
Step 263: 224272 + 856 = 225128
Step 264: 225128 + 856 = 225984
Step 265: 225984 + 856 = 226840
Step 266: 226840 + 856 = 227696
Step 267: 227696 + 856 = 228552
Step 268: 228552 + 856 = 229408
Step 269: 229408 + 856 = 230264
Step 270: 230264 + 856 = 231120
Step 271: 231120 + 856 = 231976
Step 272: 231976 + 856 = 232832
Step 273: 232832 + 856 = 233688
Step 274: 233688 + 856 = 234544
Step 275: 234544 + 856 = 235400
Step 276: 235400 + 856 = 236256
Step 277: 236256 + 856 = 237112
Step 278: 237112 + 856 = 237968
Step 279: 237968 + 856 = 238824
Step 280: 238824 + 856 = 239680
Step 281: 239680 + 856 = 240536
Step 282: 240536 + 856 = 241392
Step 283: 241392 + 856 = 242248
Step 284: 242248 + 856 = 243104
Step 285: 243104 + 856 = 243960
Step 286: 243960 + 856 = 244816
Step 287: 244816 + 856 = 245672
Step 288: 245672 + 856 = 246528
Step 289: 246528 + 856 = 247384
Step 290: 247384 + 856 = 248240
Step 291: 248240 + 856 = 249096
Step 292: 249096 + 856 = 249952
Step 293: 249952 + 856 = 250808
Step 294: 250808 + 856 = 251664
Step 295: 251664 + 856 = 252520
Step 296: 252520 + 856 = 253376
Step 297: 253376 + 856 = 254232
Step 298: 254232 + 856 = 255088
Step 299: 255088 + 856 = 255944
Step 300: 255944 + 856 = 256800
Step 301: 256800 + 856 = 257656
Step 302: 257656 + 856 = 258512
Step 303: 258512 + 856 = 259368
Step 304: 259368 + 856 = 260224
Step 305: 260224 + 856 = 261080
Step 306: 261080 + 856 = 261936
Step 307: 261936 + 856 = 262792
Step 308: 262792 + 856 = 263648
Step 309: 263648 + 856 = 264504
Step 310: 264504 + 856 = 265360
Step 311: 265360 + 856 = 266216
Step 312: 266216 + 856 = 267072
Step 313: 267072 + 856 = 267928
Step 314: 267928 + 856 = 268784
Step 315: 268784 + 856 = 269640
Step 316: 269640 + 856 = 270496
Step 317: 270496 + 856 = 271352
Step 318: 271352 + 856 = 272208
Step 319: 272208 + 856 = 273064
Step 320: 273064 + 856 = 273920
Step 321: 273920 + 856 = 274776
Step 322: 274776 + 856 = 275632
Step 323: 275632 + 856 = 276488
Step 324: 276488 + 856 = 277344
Step 325: 277344 + 856 = 278200
Step 326: 278200 + 856 = 279056
Step 327: 279056 + 856 = 279912
Step 328: 279912 + 856 = 280768
Step 329: 280768 + 856 = 281624
Step 330: 281624 + 856 = 282480
Step 331: 282480 + 856 = 283336
Step 332: 283336 + 856 = 284192
Step 333: 284192 + 856 = 285048
Step 334: 285048 + 856 = 285904
Step 335: 285904 + 856 = 286760
Step 336: 286760 + 856 = 287616
Step 337: 287616 + 856 = 288472
Step 338: 288472 + 856 = 289328
Step 339: 289328 + 856 = 290184
Step 340: 290184 + 856 = 291040
Step 341: 291040 + 856 = 291896
Step 342: 291896 + 856 = 292752
Step 343: 292752 + 856 = 293608
Step 344: 293608 + 856 = 294464
Step 345: 294464 + 856 = 295320
Step 346: 295320 + 856 = 296176
Step 347: 296176 + 856 = 297032
Step 348: 297032 + 856 = 297888
Step 349: 297888 + 856 = 298744
Step 350: 298744 + 856 = 299600
Step 351: 299600 + 856 = 300456
Step 352: 300456 + 856 = 301312
Step 353: 301312 + 856 = 302168
Step 354: 302168 + 856 = 303024
Step 355: 303024 + 856 = 303880
Step 356: 303880 + 856 = 304736
Step 357: 304736 + 856 = 305592
Step 358: 305592 + 856 = 306448
Step 359: 306448 + 856 = 307304
Step 360: 307304 + 856 = 308160
Step 361: 308160 + 856 = 309016
Step 362: 309016 + 856 = 309872
Step 363: 309872 + 856 = 310728
Step 364: 310728 + 856 = 311584
Step 365: 311584 + 856 = 312440
Step 366: 312440 + 856 = 313296
Step 367: 313296 + 856 = 314152
Step 368: 314152 + 856 = 315008
Step 369: 315008 + 856 = 315864
Step 370: 315864 + 856 = 316720
Step 371: 316720 + 856 = 317576
Step 372: 317576 + 856 = 318432
Step 373: 318432 + 856 = 319288
Step 374: 319288 + 856 = 320144
Step 375: 320144 + 856 = 321000
Step 376: 321000 + 856 = 321856
Step 377: 321856 + 856 = 322712
Step 378: 322712 + 856 = 323568
Step 379: 323568 + 856 = 324424
Step 380: 324424 + 856 = 325280
Step 381: 325280 + 856 = 326136
Step 382: 326136 + 856 = 326992
Step 383: 326992 + 856 = 327848
Step 384: 327848 + 856 = 328704
Step 385: 328704 + 856 = 329560
Step 386: 329560 + 856 = 330416
Step 387: 330416 + 856 = 331272
Step 388: 331272 + 856 = 332128
Step 389: 332128 + 856 = 332984
Step 390: 332984 + 856 = 333840
Step 391: 333840 + 856 = 334696
Step 392: 334696 + 856 = 335552
Step 393: 335552 + 856 = 336408

So, 856*393 = 336408