Let's get this math done. We have 199 and we're going to multiply it by 320. This is the same as taking 199 and adding it to itself 320 times.
Step 1: 0 + 199 = 199
Step 2: 199 + 199 = 398
Step 3: 398 + 199 = 597
Step 4: 597 + 199 = 796
Step 5: 796 + 199 = 995
Step 6: 995 + 199 = 1194
Step 7: 1194 + 199 = 1393
Step 8: 1393 + 199 = 1592
Step 9: 1592 + 199 = 1791
Step 10: 1791 + 199 = 1990
Step 11: 1990 + 199 = 2189
Step 12: 2189 + 199 = 2388
Step 13: 2388 + 199 = 2587
Step 14: 2587 + 199 = 2786
Step 15: 2786 + 199 = 2985
Step 16: 2985 + 199 = 3184
Step 17: 3184 + 199 = 3383
Step 18: 3383 + 199 = 3582
Step 19: 3582 + 199 = 3781
Step 20: 3781 + 199 = 3980
Step 21: 3980 + 199 = 4179
Step 22: 4179 + 199 = 4378
Step 23: 4378 + 199 = 4577
Step 24: 4577 + 199 = 4776
Step 25: 4776 + 199 = 4975
Step 26: 4975 + 199 = 5174
Step 27: 5174 + 199 = 5373
Step 28: 5373 + 199 = 5572
Step 29: 5572 + 199 = 5771
Step 30: 5771 + 199 = 5970
Step 31: 5970 + 199 = 6169
Step 32: 6169 + 199 = 6368
Step 33: 6368 + 199 = 6567
Step 34: 6567 + 199 = 6766
Step 35: 6766 + 199 = 6965
Step 36: 6965 + 199 = 7164
Step 37: 7164 + 199 = 7363
Step 38: 7363 + 199 = 7562
Step 39: 7562 + 199 = 7761
Step 40: 7761 + 199 = 7960
Step 41: 7960 + 199 = 8159
Step 42: 8159 + 199 = 8358
Step 43: 8358 + 199 = 8557
Step 44: 8557 + 199 = 8756
Step 45: 8756 + 199 = 8955
Step 46: 8955 + 199 = 9154
Step 47: 9154 + 199 = 9353
Step 48: 9353 + 199 = 9552
Step 49: 9552 + 199 = 9751
Step 50: 9751 + 199 = 9950
Step 51: 9950 + 199 = 10149
Step 52: 10149 + 199 = 10348
Step 53: 10348 + 199 = 10547
Step 54: 10547 + 199 = 10746
Step 55: 10746 + 199 = 10945
Step 56: 10945 + 199 = 11144
Step 57: 11144 + 199 = 11343
Step 58: 11343 + 199 = 11542
Step 59: 11542 + 199 = 11741
Step 60: 11741 + 199 = 11940
Step 61: 11940 + 199 = 12139
Step 62: 12139 + 199 = 12338
Step 63: 12338 + 199 = 12537
Step 64: 12537 + 199 = 12736
Step 65: 12736 + 199 = 12935
Step 66: 12935 + 199 = 13134
Step 67: 13134 + 199 = 13333
Step 68: 13333 + 199 = 13532
Step 69: 13532 + 199 = 13731
Step 70: 13731 + 199 = 13930
Step 71: 13930 + 199 = 14129
Step 72: 14129 + 199 = 14328
Step 73: 14328 + 199 = 14527
Step 74: 14527 + 199 = 14726
Step 75: 14726 + 199 = 14925
Step 76: 14925 + 199 = 15124
Step 77: 15124 + 199 = 15323
Step 78: 15323 + 199 = 15522
Step 79: 15522 + 199 = 15721
Step 80: 15721 + 199 = 15920
Step 81: 15920 + 199 = 16119
Step 82: 16119 + 199 = 16318
Step 83: 16318 + 199 = 16517
Step 84: 16517 + 199 = 16716
Step 85: 16716 + 199 = 16915
Step 86: 16915 + 199 = 17114
Step 87: 17114 + 199 = 17313
Step 88: 17313 + 199 = 17512
Step 89: 17512 + 199 = 17711
Step 90: 17711 + 199 = 17910
Step 91: 17910 + 199 = 18109
Step 92: 18109 + 199 = 18308
Step 93: 18308 + 199 = 18507
Step 94: 18507 + 199 = 18706
Step 95: 18706 + 199 = 18905
Step 96: 18905 + 199 = 19104
Step 97: 19104 + 199 = 19303
Step 98: 19303 + 199 = 19502
Step 99: 19502 + 199 = 19701
Step 100: 19701 + 199 = 19900
Step 101: 19900 + 199 = 20099
Step 102: 20099 + 199 = 20298
Step 103: 20298 + 199 = 20497
Step 104: 20497 + 199 = 20696
Step 105: 20696 + 199 = 20895
Step 106: 20895 + 199 = 21094
Step 107: 21094 + 199 = 21293
Step 108: 21293 + 199 = 21492
Step 109: 21492 + 199 = 21691
Step 110: 21691 + 199 = 21890
Step 111: 21890 + 199 = 22089
Step 112: 22089 + 199 = 22288
Step 113: 22288 + 199 = 22487
Step 114: 22487 + 199 = 22686
Step 115: 22686 + 199 = 22885
Step 116: 22885 + 199 = 23084
Step 117: 23084 + 199 = 23283
Step 118: 23283 + 199 = 23482
Step 119: 23482 + 199 = 23681
Step 120: 23681 + 199 = 23880
Step 121: 23880 + 199 = 24079
Step 122: 24079 + 199 = 24278
Step 123: 24278 + 199 = 24477
Step 124: 24477 + 199 = 24676
Step 125: 24676 + 199 = 24875
Step 126: 24875 + 199 = 25074
Step 127: 25074 + 199 = 25273
Step 128: 25273 + 199 = 25472
Step 129: 25472 + 199 = 25671
Step 130: 25671 + 199 = 25870
Step 131: 25870 + 199 = 26069
Step 132: 26069 + 199 = 26268
Step 133: 26268 + 199 = 26467
Step 134: 26467 + 199 = 26666
Step 135: 26666 + 199 = 26865
Step 136: 26865 + 199 = 27064
Step 137: 27064 + 199 = 27263
Step 138: 27263 + 199 = 27462
Step 139: 27462 + 199 = 27661
Step 140: 27661 + 199 = 27860
Step 141: 27860 + 199 = 28059
Step 142: 28059 + 199 = 28258
Step 143: 28258 + 199 = 28457
Step 144: 28457 + 199 = 28656
Step 145: 28656 + 199 = 28855
Step 146: 28855 + 199 = 29054
Step 147: 29054 + 199 = 29253
Step 148: 29253 + 199 = 29452
Step 149: 29452 + 199 = 29651
Step 150: 29651 + 199 = 29850
Step 151: 29850 + 199 = 30049
Step 152: 30049 + 199 = 30248
Step 153: 30248 + 199 = 30447
Step 154: 30447 + 199 = 30646
Step 155: 30646 + 199 = 30845
Step 156: 30845 + 199 = 31044
Step 157: 31044 + 199 = 31243
Step 158: 31243 + 199 = 31442
Step 159: 31442 + 199 = 31641
Step 160: 31641 + 199 = 31840
Step 161: 31840 + 199 = 32039
Step 162: 32039 + 199 = 32238
Step 163: 32238 + 199 = 32437
Step 164: 32437 + 199 = 32636
Step 165: 32636 + 199 = 32835
Step 166: 32835 + 199 = 33034
Step 167: 33034 + 199 = 33233
Step 168: 33233 + 199 = 33432
Step 169: 33432 + 199 = 33631
Step 170: 33631 + 199 = 33830
Step 171: 33830 + 199 = 34029
Step 172: 34029 + 199 = 34228
Step 173: 34228 + 199 = 34427
Step 174: 34427 + 199 = 34626
Step 175: 34626 + 199 = 34825
Step 176: 34825 + 199 = 35024
Step 177: 35024 + 199 = 35223
Step 178: 35223 + 199 = 35422
Step 179: 35422 + 199 = 35621
Step 180: 35621 + 199 = 35820
Step 181: 35820 + 199 = 36019
Step 182: 36019 + 199 = 36218
Step 183: 36218 + 199 = 36417
Step 184: 36417 + 199 = 36616
Step 185: 36616 + 199 = 36815
Step 186: 36815 + 199 = 37014
Step 187: 37014 + 199 = 37213
Step 188: 37213 + 199 = 37412
Step 189: 37412 + 199 = 37611
Step 190: 37611 + 199 = 37810
Step 191: 37810 + 199 = 38009
Step 192: 38009 + 199 = 38208
Step 193: 38208 + 199 = 38407
Step 194: 38407 + 199 = 38606
Step 195: 38606 + 199 = 38805
Step 196: 38805 + 199 = 39004
Step 197: 39004 + 199 = 39203
Step 198: 39203 + 199 = 39402
Step 199: 39402 + 199 = 39601
Step 200: 39601 + 199 = 39800
Step 201: 39800 + 199 = 39999
Step 202: 39999 + 199 = 40198
Step 203: 40198 + 199 = 40397
Step 204: 40397 + 199 = 40596
Step 205: 40596 + 199 = 40795
Step 206: 40795 + 199 = 40994
Step 207: 40994 + 199 = 41193
Step 208: 41193 + 199 = 41392
Step 209: 41392 + 199 = 41591
Step 210: 41591 + 199 = 41790
Step 211: 41790 + 199 = 41989
Step 212: 41989 + 199 = 42188
Step 213: 42188 + 199 = 42387
Step 214: 42387 + 199 = 42586
Step 215: 42586 + 199 = 42785
Step 216: 42785 + 199 = 42984
Step 217: 42984 + 199 = 43183
Step 218: 43183 + 199 = 43382
Step 219: 43382 + 199 = 43581
Step 220: 43581 + 199 = 43780
Step 221: 43780 + 199 = 43979
Step 222: 43979 + 199 = 44178
Step 223: 44178 + 199 = 44377
Step 224: 44377 + 199 = 44576
Step 225: 44576 + 199 = 44775
Step 226: 44775 + 199 = 44974
Step 227: 44974 + 199 = 45173
Step 228: 45173 + 199 = 45372
Step 229: 45372 + 199 = 45571
Step 230: 45571 + 199 = 45770
Step 231: 45770 + 199 = 45969
Step 232: 45969 + 199 = 46168
Step 233: 46168 + 199 = 46367
Step 234: 46367 + 199 = 46566
Step 235: 46566 + 199 = 46765
Step 236: 46765 + 199 = 46964
Step 237: 46964 + 199 = 47163
Step 238: 47163 + 199 = 47362
Step 239: 47362 + 199 = 47561
Step 240: 47561 + 199 = 47760
Step 241: 47760 + 199 = 47959
Step 242: 47959 + 199 = 48158
Step 243: 48158 + 199 = 48357
Step 244: 48357 + 199 = 48556
Step 245: 48556 + 199 = 48755
Step 246: 48755 + 199 = 48954
Step 247: 48954 + 199 = 49153
Step 248: 49153 + 199 = 49352
Step 249: 49352 + 199 = 49551
Step 250: 49551 + 199 = 49750
Step 251: 49750 + 199 = 49949
Step 252: 49949 + 199 = 50148
Step 253: 50148 + 199 = 50347
Step 254: 50347 + 199 = 50546
Step 255: 50546 + 199 = 50745
Step 256: 50745 + 199 = 50944
Step 257: 50944 + 199 = 51143
Step 258: 51143 + 199 = 51342
Step 259: 51342 + 199 = 51541
Step 260: 51541 + 199 = 51740
Step 261: 51740 + 199 = 51939
Step 262: 51939 + 199 = 52138
Step 263: 52138 + 199 = 52337
Step 264: 52337 + 199 = 52536
Step 265: 52536 + 199 = 52735
Step 266: 52735 + 199 = 52934
Step 267: 52934 + 199 = 53133
Step 268: 53133 + 199 = 53332
Step 269: 53332 + 199 = 53531
Step 270: 53531 + 199 = 53730
Step 271: 53730 + 199 = 53929
Step 272: 53929 + 199 = 54128
Step 273: 54128 + 199 = 54327
Step 274: 54327 + 199 = 54526
Step 275: 54526 + 199 = 54725
Step 276: 54725 + 199 = 54924
Step 277: 54924 + 199 = 55123
Step 278: 55123 + 199 = 55322
Step 279: 55322 + 199 = 55521
Step 280: 55521 + 199 = 55720
Step 281: 55720 + 199 = 55919
Step 282: 55919 + 199 = 56118
Step 283: 56118 + 199 = 56317
Step 284: 56317 + 199 = 56516
Step 285: 56516 + 199 = 56715
Step 286: 56715 + 199 = 56914
Step 287: 56914 + 199 = 57113
Step 288: 57113 + 199 = 57312
Step 289: 57312 + 199 = 57511
Step 290: 57511 + 199 = 57710
Step 291: 57710 + 199 = 57909
Step 292: 57909 + 199 = 58108
Step 293: 58108 + 199 = 58307
Step 294: 58307 + 199 = 58506
Step 295: 58506 + 199 = 58705
Step 296: 58705 + 199 = 58904
Step 297: 58904 + 199 = 59103
Step 298: 59103 + 199 = 59302
Step 299: 59302 + 199 = 59501
Step 300: 59501 + 199 = 59700
Step 301: 59700 + 199 = 59899
Step 302: 59899 + 199 = 60098
Step 303: 60098 + 199 = 60297
Step 304: 60297 + 199 = 60496
Step 305: 60496 + 199 = 60695
Step 306: 60695 + 199 = 60894
Step 307: 60894 + 199 = 61093
Step 308: 61093 + 199 = 61292
Step 309: 61292 + 199 = 61491
Step 310: 61491 + 199 = 61690
Step 311: 61690 + 199 = 61889
Step 312: 61889 + 199 = 62088
Step 313: 62088 + 199 = 62287
Step 314: 62287 + 199 = 62486
Step 315: 62486 + 199 = 62685
Step 316: 62685 + 199 = 62884
Step 317: 62884 + 199 = 63083
Step 318: 63083 + 199 = 63282
Step 319: 63282 + 199 = 63481
Step 320: 63481 + 199 = 63680

So, 199*320 = 63680