Alright, let's solve this math problem step by step. First, we have the number 300. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 391. So, we're going to take the number 300 and add it to itself 391 times.
Step 1: 0 + 300 = 300
Step 2: 300 + 300 = 600
Step 3: 600 + 300 = 900
Step 4: 900 + 300 = 1200
Step 5: 1200 + 300 = 1500
Step 6: 1500 + 300 = 1800
Step 7: 1800 + 300 = 2100
Step 8: 2100 + 300 = 2400
Step 9: 2400 + 300 = 2700
Step 10: 2700 + 300 = 3000
Step 11: 3000 + 300 = 3300
Step 12: 3300 + 300 = 3600
Step 13: 3600 + 300 = 3900
Step 14: 3900 + 300 = 4200
Step 15: 4200 + 300 = 4500
Step 16: 4500 + 300 = 4800
Step 17: 4800 + 300 = 5100
Step 18: 5100 + 300 = 5400
Step 19: 5400 + 300 = 5700
Step 20: 5700 + 300 = 6000
Step 21: 6000 + 300 = 6300
Step 22: 6300 + 300 = 6600
Step 23: 6600 + 300 = 6900
Step 24: 6900 + 300 = 7200
Step 25: 7200 + 300 = 7500
Step 26: 7500 + 300 = 7800
Step 27: 7800 + 300 = 8100
Step 28: 8100 + 300 = 8400
Step 29: 8400 + 300 = 8700
Step 30: 8700 + 300 = 9000
Step 31: 9000 + 300 = 9300
Step 32: 9300 + 300 = 9600
Step 33: 9600 + 300 = 9900
Step 34: 9900 + 300 = 10200
Step 35: 10200 + 300 = 10500
Step 36: 10500 + 300 = 10800
Step 37: 10800 + 300 = 11100
Step 38: 11100 + 300 = 11400
Step 39: 11400 + 300 = 11700
Step 40: 11700 + 300 = 12000
Step 41: 12000 + 300 = 12300
Step 42: 12300 + 300 = 12600
Step 43: 12600 + 300 = 12900
Step 44: 12900 + 300 = 13200
Step 45: 13200 + 300 = 13500
Step 46: 13500 + 300 = 13800
Step 47: 13800 + 300 = 14100
Step 48: 14100 + 300 = 14400
Step 49: 14400 + 300 = 14700
Step 50: 14700 + 300 = 15000
Step 51: 15000 + 300 = 15300
Step 52: 15300 + 300 = 15600
Step 53: 15600 + 300 = 15900
Step 54: 15900 + 300 = 16200
Step 55: 16200 + 300 = 16500
Step 56: 16500 + 300 = 16800
Step 57: 16800 + 300 = 17100
Step 58: 17100 + 300 = 17400
Step 59: 17400 + 300 = 17700
Step 60: 17700 + 300 = 18000
Step 61: 18000 + 300 = 18300
Step 62: 18300 + 300 = 18600
Step 63: 18600 + 300 = 18900
Step 64: 18900 + 300 = 19200
Step 65: 19200 + 300 = 19500
Step 66: 19500 + 300 = 19800
Step 67: 19800 + 300 = 20100
Step 68: 20100 + 300 = 20400
Step 69: 20400 + 300 = 20700
Step 70: 20700 + 300 = 21000
Step 71: 21000 + 300 = 21300
Step 72: 21300 + 300 = 21600
Step 73: 21600 + 300 = 21900
Step 74: 21900 + 300 = 22200
Step 75: 22200 + 300 = 22500
Step 76: 22500 + 300 = 22800
Step 77: 22800 + 300 = 23100
Step 78: 23100 + 300 = 23400
Step 79: 23400 + 300 = 23700
Step 80: 23700 + 300 = 24000
Step 81: 24000 + 300 = 24300
Step 82: 24300 + 300 = 24600
Step 83: 24600 + 300 = 24900
Step 84: 24900 + 300 = 25200
Step 85: 25200 + 300 = 25500
Step 86: 25500 + 300 = 25800
Step 87: 25800 + 300 = 26100
Step 88: 26100 + 300 = 26400
Step 89: 26400 + 300 = 26700
Step 90: 26700 + 300 = 27000
Step 91: 27000 + 300 = 27300
Step 92: 27300 + 300 = 27600
Step 93: 27600 + 300 = 27900
Step 94: 27900 + 300 = 28200
Step 95: 28200 + 300 = 28500
Step 96: 28500 + 300 = 28800
Step 97: 28800 + 300 = 29100
Step 98: 29100 + 300 = 29400
Step 99: 29400 + 300 = 29700
Step 100: 29700 + 300 = 30000
Step 101: 30000 + 300 = 30300
Step 102: 30300 + 300 = 30600
Step 103: 30600 + 300 = 30900
Step 104: 30900 + 300 = 31200
Step 105: 31200 + 300 = 31500
Step 106: 31500 + 300 = 31800
Step 107: 31800 + 300 = 32100
Step 108: 32100 + 300 = 32400
Step 109: 32400 + 300 = 32700
Step 110: 32700 + 300 = 33000
Step 111: 33000 + 300 = 33300
Step 112: 33300 + 300 = 33600
Step 113: 33600 + 300 = 33900
Step 114: 33900 + 300 = 34200
Step 115: 34200 + 300 = 34500
Step 116: 34500 + 300 = 34800
Step 117: 34800 + 300 = 35100
Step 118: 35100 + 300 = 35400
Step 119: 35400 + 300 = 35700
Step 120: 35700 + 300 = 36000
Step 121: 36000 + 300 = 36300
Step 122: 36300 + 300 = 36600
Step 123: 36600 + 300 = 36900
Step 124: 36900 + 300 = 37200
Step 125: 37200 + 300 = 37500
Step 126: 37500 + 300 = 37800
Step 127: 37800 + 300 = 38100
Step 128: 38100 + 300 = 38400
Step 129: 38400 + 300 = 38700
Step 130: 38700 + 300 = 39000
Step 131: 39000 + 300 = 39300
Step 132: 39300 + 300 = 39600
Step 133: 39600 + 300 = 39900
Step 134: 39900 + 300 = 40200
Step 135: 40200 + 300 = 40500
Step 136: 40500 + 300 = 40800
Step 137: 40800 + 300 = 41100
Step 138: 41100 + 300 = 41400
Step 139: 41400 + 300 = 41700
Step 140: 41700 + 300 = 42000
Step 141: 42000 + 300 = 42300
Step 142: 42300 + 300 = 42600
Step 143: 42600 + 300 = 42900
Step 144: 42900 + 300 = 43200
Step 145: 43200 + 300 = 43500
Step 146: 43500 + 300 = 43800
Step 147: 43800 + 300 = 44100
Step 148: 44100 + 300 = 44400
Step 149: 44400 + 300 = 44700
Step 150: 44700 + 300 = 45000
Step 151: 45000 + 300 = 45300
Step 152: 45300 + 300 = 45600
Step 153: 45600 + 300 = 45900
Step 154: 45900 + 300 = 46200
Step 155: 46200 + 300 = 46500
Step 156: 46500 + 300 = 46800
Step 157: 46800 + 300 = 47100
Step 158: 47100 + 300 = 47400
Step 159: 47400 + 300 = 47700
Step 160: 47700 + 300 = 48000
Step 161: 48000 + 300 = 48300
Step 162: 48300 + 300 = 48600
Step 163: 48600 + 300 = 48900
Step 164: 48900 + 300 = 49200
Step 165: 49200 + 300 = 49500
Step 166: 49500 + 300 = 49800
Step 167: 49800 + 300 = 50100
Step 168: 50100 + 300 = 50400
Step 169: 50400 + 300 = 50700
Step 170: 50700 + 300 = 51000
Step 171: 51000 + 300 = 51300
Step 172: 51300 + 300 = 51600
Step 173: 51600 + 300 = 51900
Step 174: 51900 + 300 = 52200
Step 175: 52200 + 300 = 52500
Step 176: 52500 + 300 = 52800
Step 177: 52800 + 300 = 53100
Step 178: 53100 + 300 = 53400
Step 179: 53400 + 300 = 53700
Step 180: 53700 + 300 = 54000
Step 181: 54000 + 300 = 54300
Step 182: 54300 + 300 = 54600
Step 183: 54600 + 300 = 54900
Step 184: 54900 + 300 = 55200
Step 185: 55200 + 300 = 55500
Step 186: 55500 + 300 = 55800
Step 187: 55800 + 300 = 56100
Step 188: 56100 + 300 = 56400
Step 189: 56400 + 300 = 56700
Step 190: 56700 + 300 = 57000
Step 191: 57000 + 300 = 57300
Step 192: 57300 + 300 = 57600
Step 193: 57600 + 300 = 57900
Step 194: 57900 + 300 = 58200
Step 195: 58200 + 300 = 58500
Step 196: 58500 + 300 = 58800
Step 197: 58800 + 300 = 59100
Step 198: 59100 + 300 = 59400
Step 199: 59400 + 300 = 59700
Step 200: 59700 + 300 = 60000
Step 201: 60000 + 300 = 60300
Step 202: 60300 + 300 = 60600
Step 203: 60600 + 300 = 60900
Step 204: 60900 + 300 = 61200
Step 205: 61200 + 300 = 61500
Step 206: 61500 + 300 = 61800
Step 207: 61800 + 300 = 62100
Step 208: 62100 + 300 = 62400
Step 209: 62400 + 300 = 62700
Step 210: 62700 + 300 = 63000
Step 211: 63000 + 300 = 63300
Step 212: 63300 + 300 = 63600
Step 213: 63600 + 300 = 63900
Step 214: 63900 + 300 = 64200
Step 215: 64200 + 300 = 64500
Step 216: 64500 + 300 = 64800
Step 217: 64800 + 300 = 65100
Step 218: 65100 + 300 = 65400
Step 219: 65400 + 300 = 65700
Step 220: 65700 + 300 = 66000
Step 221: 66000 + 300 = 66300
Step 222: 66300 + 300 = 66600
Step 223: 66600 + 300 = 66900
Step 224: 66900 + 300 = 67200
Step 225: 67200 + 300 = 67500
Step 226: 67500 + 300 = 67800
Step 227: 67800 + 300 = 68100
Step 228: 68100 + 300 = 68400
Step 229: 68400 + 300 = 68700
Step 230: 68700 + 300 = 69000
Step 231: 69000 + 300 = 69300
Step 232: 69300 + 300 = 69600
Step 233: 69600 + 300 = 69900
Step 234: 69900 + 300 = 70200
Step 235: 70200 + 300 = 70500
Step 236: 70500 + 300 = 70800
Step 237: 70800 + 300 = 71100
Step 238: 71100 + 300 = 71400
Step 239: 71400 + 300 = 71700
Step 240: 71700 + 300 = 72000
Step 241: 72000 + 300 = 72300
Step 242: 72300 + 300 = 72600
Step 243: 72600 + 300 = 72900
Step 244: 72900 + 300 = 73200
Step 245: 73200 + 300 = 73500
Step 246: 73500 + 300 = 73800
Step 247: 73800 + 300 = 74100
Step 248: 74100 + 300 = 74400
Step 249: 74400 + 300 = 74700
Step 250: 74700 + 300 = 75000
Step 251: 75000 + 300 = 75300
Step 252: 75300 + 300 = 75600
Step 253: 75600 + 300 = 75900
Step 254: 75900 + 300 = 76200
Step 255: 76200 + 300 = 76500
Step 256: 76500 + 300 = 76800
Step 257: 76800 + 300 = 77100
Step 258: 77100 + 300 = 77400
Step 259: 77400 + 300 = 77700
Step 260: 77700 + 300 = 78000
Step 261: 78000 + 300 = 78300
Step 262: 78300 + 300 = 78600
Step 263: 78600 + 300 = 78900
Step 264: 78900 + 300 = 79200
Step 265: 79200 + 300 = 79500
Step 266: 79500 + 300 = 79800
Step 267: 79800 + 300 = 80100
Step 268: 80100 + 300 = 80400
Step 269: 80400 + 300 = 80700
Step 270: 80700 + 300 = 81000
Step 271: 81000 + 300 = 81300
Step 272: 81300 + 300 = 81600
Step 273: 81600 + 300 = 81900
Step 274: 81900 + 300 = 82200
Step 275: 82200 + 300 = 82500
Step 276: 82500 + 300 = 82800
Step 277: 82800 + 300 = 83100
Step 278: 83100 + 300 = 83400
Step 279: 83400 + 300 = 83700
Step 280: 83700 + 300 = 84000
Step 281: 84000 + 300 = 84300
Step 282: 84300 + 300 = 84600
Step 283: 84600 + 300 = 84900
Step 284: 84900 + 300 = 85200
Step 285: 85200 + 300 = 85500
Step 286: 85500 + 300 = 85800
Step 287: 85800 + 300 = 86100
Step 288: 86100 + 300 = 86400
Step 289: 86400 + 300 = 86700
Step 290: 86700 + 300 = 87000
Step 291: 87000 + 300 = 87300
Step 292: 87300 + 300 = 87600
Step 293: 87600 + 300 = 87900
Step 294: 87900 + 300 = 88200
Step 295: 88200 + 300 = 88500
Step 296: 88500 + 300 = 88800
Step 297: 88800 + 300 = 89100
Step 298: 89100 + 300 = 89400
Step 299: 89400 + 300 = 89700
Step 300: 89700 + 300 = 90000
Step 301: 90000 + 300 = 90300
Step 302: 90300 + 300 = 90600
Step 303: 90600 + 300 = 90900
Step 304: 90900 + 300 = 91200
Step 305: 91200 + 300 = 91500
Step 306: 91500 + 300 = 91800
Step 307: 91800 + 300 = 92100
Step 308: 92100 + 300 = 92400
Step 309: 92400 + 300 = 92700
Step 310: 92700 + 300 = 93000
Step 311: 93000 + 300 = 93300
Step 312: 93300 + 300 = 93600
Step 313: 93600 + 300 = 93900
Step 314: 93900 + 300 = 94200
Step 315: 94200 + 300 = 94500
Step 316: 94500 + 300 = 94800
Step 317: 94800 + 300 = 95100
Step 318: 95100 + 300 = 95400
Step 319: 95400 + 300 = 95700
Step 320: 95700 + 300 = 96000
Step 321: 96000 + 300 = 96300
Step 322: 96300 + 300 = 96600
Step 323: 96600 + 300 = 96900
Step 324: 96900 + 300 = 97200
Step 325: 97200 + 300 = 97500
Step 326: 97500 + 300 = 97800
Step 327: 97800 + 300 = 98100
Step 328: 98100 + 300 = 98400
Step 329: 98400 + 300 = 98700
Step 330: 98700 + 300 = 99000
Step 331: 99000 + 300 = 99300
Step 332: 99300 + 300 = 99600
Step 333: 99600 + 300 = 99900
Step 334: 99900 + 300 = 100200
Step 335: 100200 + 300 = 100500
Step 336: 100500 + 300 = 100800
Step 337: 100800 + 300 = 101100
Step 338: 101100 + 300 = 101400
Step 339: 101400 + 300 = 101700
Step 340: 101700 + 300 = 102000
Step 341: 102000 + 300 = 102300
Step 342: 102300 + 300 = 102600
Step 343: 102600 + 300 = 102900
Step 344: 102900 + 300 = 103200
Step 345: 103200 + 300 = 103500
Step 346: 103500 + 300 = 103800
Step 347: 103800 + 300 = 104100
Step 348: 104100 + 300 = 104400
Step 349: 104400 + 300 = 104700
Step 350: 104700 + 300 = 105000
Step 351: 105000 + 300 = 105300
Step 352: 105300 + 300 = 105600
Step 353: 105600 + 300 = 105900
Step 354: 105900 + 300 = 106200
Step 355: 106200 + 300 = 106500
Step 356: 106500 + 300 = 106800
Step 357: 106800 + 300 = 107100
Step 358: 107100 + 300 = 107400
Step 359: 107400 + 300 = 107700
Step 360: 107700 + 300 = 108000
Step 361: 108000 + 300 = 108300
Step 362: 108300 + 300 = 108600
Step 363: 108600 + 300 = 108900
Step 364: 108900 + 300 = 109200
Step 365: 109200 + 300 = 109500
Step 366: 109500 + 300 = 109800
Step 367: 109800 + 300 = 110100
Step 368: 110100 + 300 = 110400
Step 369: 110400 + 300 = 110700
Step 370: 110700 + 300 = 111000
Step 371: 111000 + 300 = 111300
Step 372: 111300 + 300 = 111600
Step 373: 111600 + 300 = 111900
Step 374: 111900 + 300 = 112200
Step 375: 112200 + 300 = 112500
Step 376: 112500 + 300 = 112800
Step 377: 112800 + 300 = 113100
Step 378: 113100 + 300 = 113400
Step 379: 113400 + 300 = 113700
Step 380: 113700 + 300 = 114000
Step 381: 114000 + 300 = 114300
Step 382: 114300 + 300 = 114600
Step 383: 114600 + 300 = 114900
Step 384: 114900 + 300 = 115200
Step 385: 115200 + 300 = 115500
Step 386: 115500 + 300 = 115800
Step 387: 115800 + 300 = 116100
Step 388: 116100 + 300 = 116400
Step 389: 116400 + 300 = 116700
Step 390: 116700 + 300 = 117000
Step 391: 117000 + 300 = 117300

So, 300*391 = 117300