OK, let's work through this together. We're starting with 770 and we're going to multiply it by 379, which means we add 770 to itself 379 times.
Step 1: 0 + 770 = 770
Step 2: 770 + 770 = 1540
Step 3: 1540 + 770 = 2310
Step 4: 2310 + 770 = 3080
Step 5: 3080 + 770 = 3850
Step 6: 3850 + 770 = 4620
Step 7: 4620 + 770 = 5390
Step 8: 5390 + 770 = 6160
Step 9: 6160 + 770 = 6930
Step 10: 6930 + 770 = 7700
Step 11: 7700 + 770 = 8470
Step 12: 8470 + 770 = 9240
Step 13: 9240 + 770 = 10010
Step 14: 10010 + 770 = 10780
Step 15: 10780 + 770 = 11550
Step 16: 11550 + 770 = 12320
Step 17: 12320 + 770 = 13090
Step 18: 13090 + 770 = 13860
Step 19: 13860 + 770 = 14630
Step 20: 14630 + 770 = 15400
Step 21: 15400 + 770 = 16170
Step 22: 16170 + 770 = 16940
Step 23: 16940 + 770 = 17710
Step 24: 17710 + 770 = 18480
Step 25: 18480 + 770 = 19250
Step 26: 19250 + 770 = 20020
Step 27: 20020 + 770 = 20790
Step 28: 20790 + 770 = 21560
Step 29: 21560 + 770 = 22330
Step 30: 22330 + 770 = 23100
Step 31: 23100 + 770 = 23870
Step 32: 23870 + 770 = 24640
Step 33: 24640 + 770 = 25410
Step 34: 25410 + 770 = 26180
Step 35: 26180 + 770 = 26950
Step 36: 26950 + 770 = 27720
Step 37: 27720 + 770 = 28490
Step 38: 28490 + 770 = 29260
Step 39: 29260 + 770 = 30030
Step 40: 30030 + 770 = 30800
Step 41: 30800 + 770 = 31570
Step 42: 31570 + 770 = 32340
Step 43: 32340 + 770 = 33110
Step 44: 33110 + 770 = 33880
Step 45: 33880 + 770 = 34650
Step 46: 34650 + 770 = 35420
Step 47: 35420 + 770 = 36190
Step 48: 36190 + 770 = 36960
Step 49: 36960 + 770 = 37730
Step 50: 37730 + 770 = 38500
Step 51: 38500 + 770 = 39270
Step 52: 39270 + 770 = 40040
Step 53: 40040 + 770 = 40810
Step 54: 40810 + 770 = 41580
Step 55: 41580 + 770 = 42350
Step 56: 42350 + 770 = 43120
Step 57: 43120 + 770 = 43890
Step 58: 43890 + 770 = 44660
Step 59: 44660 + 770 = 45430
Step 60: 45430 + 770 = 46200
Step 61: 46200 + 770 = 46970
Step 62: 46970 + 770 = 47740
Step 63: 47740 + 770 = 48510
Step 64: 48510 + 770 = 49280
Step 65: 49280 + 770 = 50050
Step 66: 50050 + 770 = 50820
Step 67: 50820 + 770 = 51590
Step 68: 51590 + 770 = 52360
Step 69: 52360 + 770 = 53130
Step 70: 53130 + 770 = 53900
Step 71: 53900 + 770 = 54670
Step 72: 54670 + 770 = 55440
Step 73: 55440 + 770 = 56210
Step 74: 56210 + 770 = 56980
Step 75: 56980 + 770 = 57750
Step 76: 57750 + 770 = 58520
Step 77: 58520 + 770 = 59290
Step 78: 59290 + 770 = 60060
Step 79: 60060 + 770 = 60830
Step 80: 60830 + 770 = 61600
Step 81: 61600 + 770 = 62370
Step 82: 62370 + 770 = 63140
Step 83: 63140 + 770 = 63910
Step 84: 63910 + 770 = 64680
Step 85: 64680 + 770 = 65450
Step 86: 65450 + 770 = 66220
Step 87: 66220 + 770 = 66990
Step 88: 66990 + 770 = 67760
Step 89: 67760 + 770 = 68530
Step 90: 68530 + 770 = 69300
Step 91: 69300 + 770 = 70070
Step 92: 70070 + 770 = 70840
Step 93: 70840 + 770 = 71610
Step 94: 71610 + 770 = 72380
Step 95: 72380 + 770 = 73150
Step 96: 73150 + 770 = 73920
Step 97: 73920 + 770 = 74690
Step 98: 74690 + 770 = 75460
Step 99: 75460 + 770 = 76230
Step 100: 76230 + 770 = 77000
Step 101: 77000 + 770 = 77770
Step 102: 77770 + 770 = 78540
Step 103: 78540 + 770 = 79310
Step 104: 79310 + 770 = 80080
Step 105: 80080 + 770 = 80850
Step 106: 80850 + 770 = 81620
Step 107: 81620 + 770 = 82390
Step 108: 82390 + 770 = 83160
Step 109: 83160 + 770 = 83930
Step 110: 83930 + 770 = 84700
Step 111: 84700 + 770 = 85470
Step 112: 85470 + 770 = 86240
Step 113: 86240 + 770 = 87010
Step 114: 87010 + 770 = 87780
Step 115: 87780 + 770 = 88550
Step 116: 88550 + 770 = 89320
Step 117: 89320 + 770 = 90090
Step 118: 90090 + 770 = 90860
Step 119: 90860 + 770 = 91630
Step 120: 91630 + 770 = 92400
Step 121: 92400 + 770 = 93170
Step 122: 93170 + 770 = 93940
Step 123: 93940 + 770 = 94710
Step 124: 94710 + 770 = 95480
Step 125: 95480 + 770 = 96250
Step 126: 96250 + 770 = 97020
Step 127: 97020 + 770 = 97790
Step 128: 97790 + 770 = 98560
Step 129: 98560 + 770 = 99330
Step 130: 99330 + 770 = 100100
Step 131: 100100 + 770 = 100870
Step 132: 100870 + 770 = 101640
Step 133: 101640 + 770 = 102410
Step 134: 102410 + 770 = 103180
Step 135: 103180 + 770 = 103950
Step 136: 103950 + 770 = 104720
Step 137: 104720 + 770 = 105490
Step 138: 105490 + 770 = 106260
Step 139: 106260 + 770 = 107030
Step 140: 107030 + 770 = 107800
Step 141: 107800 + 770 = 108570
Step 142: 108570 + 770 = 109340
Step 143: 109340 + 770 = 110110
Step 144: 110110 + 770 = 110880
Step 145: 110880 + 770 = 111650
Step 146: 111650 + 770 = 112420
Step 147: 112420 + 770 = 113190
Step 148: 113190 + 770 = 113960
Step 149: 113960 + 770 = 114730
Step 150: 114730 + 770 = 115500
Step 151: 115500 + 770 = 116270
Step 152: 116270 + 770 = 117040
Step 153: 117040 + 770 = 117810
Step 154: 117810 + 770 = 118580
Step 155: 118580 + 770 = 119350
Step 156: 119350 + 770 = 120120
Step 157: 120120 + 770 = 120890
Step 158: 120890 + 770 = 121660
Step 159: 121660 + 770 = 122430
Step 160: 122430 + 770 = 123200
Step 161: 123200 + 770 = 123970
Step 162: 123970 + 770 = 124740
Step 163: 124740 + 770 = 125510
Step 164: 125510 + 770 = 126280
Step 165: 126280 + 770 = 127050
Step 166: 127050 + 770 = 127820
Step 167: 127820 + 770 = 128590
Step 168: 128590 + 770 = 129360
Step 169: 129360 + 770 = 130130
Step 170: 130130 + 770 = 130900
Step 171: 130900 + 770 = 131670
Step 172: 131670 + 770 = 132440
Step 173: 132440 + 770 = 133210
Step 174: 133210 + 770 = 133980
Step 175: 133980 + 770 = 134750
Step 176: 134750 + 770 = 135520
Step 177: 135520 + 770 = 136290
Step 178: 136290 + 770 = 137060
Step 179: 137060 + 770 = 137830
Step 180: 137830 + 770 = 138600
Step 181: 138600 + 770 = 139370
Step 182: 139370 + 770 = 140140
Step 183: 140140 + 770 = 140910
Step 184: 140910 + 770 = 141680
Step 185: 141680 + 770 = 142450
Step 186: 142450 + 770 = 143220
Step 187: 143220 + 770 = 143990
Step 188: 143990 + 770 = 144760
Step 189: 144760 + 770 = 145530
Step 190: 145530 + 770 = 146300
Step 191: 146300 + 770 = 147070
Step 192: 147070 + 770 = 147840
Step 193: 147840 + 770 = 148610
Step 194: 148610 + 770 = 149380
Step 195: 149380 + 770 = 150150
Step 196: 150150 + 770 = 150920
Step 197: 150920 + 770 = 151690
Step 198: 151690 + 770 = 152460
Step 199: 152460 + 770 = 153230
Step 200: 153230 + 770 = 154000
Step 201: 154000 + 770 = 154770
Step 202: 154770 + 770 = 155540
Step 203: 155540 + 770 = 156310
Step 204: 156310 + 770 = 157080
Step 205: 157080 + 770 = 157850
Step 206: 157850 + 770 = 158620
Step 207: 158620 + 770 = 159390
Step 208: 159390 + 770 = 160160
Step 209: 160160 + 770 = 160930
Step 210: 160930 + 770 = 161700
Step 211: 161700 + 770 = 162470
Step 212: 162470 + 770 = 163240
Step 213: 163240 + 770 = 164010
Step 214: 164010 + 770 = 164780
Step 215: 164780 + 770 = 165550
Step 216: 165550 + 770 = 166320
Step 217: 166320 + 770 = 167090
Step 218: 167090 + 770 = 167860
Step 219: 167860 + 770 = 168630
Step 220: 168630 + 770 = 169400
Step 221: 169400 + 770 = 170170
Step 222: 170170 + 770 = 170940
Step 223: 170940 + 770 = 171710
Step 224: 171710 + 770 = 172480
Step 225: 172480 + 770 = 173250
Step 226: 173250 + 770 = 174020
Step 227: 174020 + 770 = 174790
Step 228: 174790 + 770 = 175560
Step 229: 175560 + 770 = 176330
Step 230: 176330 + 770 = 177100
Step 231: 177100 + 770 = 177870
Step 232: 177870 + 770 = 178640
Step 233: 178640 + 770 = 179410
Step 234: 179410 + 770 = 180180
Step 235: 180180 + 770 = 180950
Step 236: 180950 + 770 = 181720
Step 237: 181720 + 770 = 182490
Step 238: 182490 + 770 = 183260
Step 239: 183260 + 770 = 184030
Step 240: 184030 + 770 = 184800
Step 241: 184800 + 770 = 185570
Step 242: 185570 + 770 = 186340
Step 243: 186340 + 770 = 187110
Step 244: 187110 + 770 = 187880
Step 245: 187880 + 770 = 188650
Step 246: 188650 + 770 = 189420
Step 247: 189420 + 770 = 190190
Step 248: 190190 + 770 = 190960
Step 249: 190960 + 770 = 191730
Step 250: 191730 + 770 = 192500
Step 251: 192500 + 770 = 193270
Step 252: 193270 + 770 = 194040
Step 253: 194040 + 770 = 194810
Step 254: 194810 + 770 = 195580
Step 255: 195580 + 770 = 196350
Step 256: 196350 + 770 = 197120
Step 257: 197120 + 770 = 197890
Step 258: 197890 + 770 = 198660
Step 259: 198660 + 770 = 199430
Step 260: 199430 + 770 = 200200
Step 261: 200200 + 770 = 200970
Step 262: 200970 + 770 = 201740
Step 263: 201740 + 770 = 202510
Step 264: 202510 + 770 = 203280
Step 265: 203280 + 770 = 204050
Step 266: 204050 + 770 = 204820
Step 267: 204820 + 770 = 205590
Step 268: 205590 + 770 = 206360
Step 269: 206360 + 770 = 207130
Step 270: 207130 + 770 = 207900
Step 271: 207900 + 770 = 208670
Step 272: 208670 + 770 = 209440
Step 273: 209440 + 770 = 210210
Step 274: 210210 + 770 = 210980
Step 275: 210980 + 770 = 211750
Step 276: 211750 + 770 = 212520
Step 277: 212520 + 770 = 213290
Step 278: 213290 + 770 = 214060
Step 279: 214060 + 770 = 214830
Step 280: 214830 + 770 = 215600
Step 281: 215600 + 770 = 216370
Step 282: 216370 + 770 = 217140
Step 283: 217140 + 770 = 217910
Step 284: 217910 + 770 = 218680
Step 285: 218680 + 770 = 219450
Step 286: 219450 + 770 = 220220
Step 287: 220220 + 770 = 220990
Step 288: 220990 + 770 = 221760
Step 289: 221760 + 770 = 222530
Step 290: 222530 + 770 = 223300
Step 291: 223300 + 770 = 224070
Step 292: 224070 + 770 = 224840
Step 293: 224840 + 770 = 225610
Step 294: 225610 + 770 = 226380
Step 295: 226380 + 770 = 227150
Step 296: 227150 + 770 = 227920
Step 297: 227920 + 770 = 228690
Step 298: 228690 + 770 = 229460
Step 299: 229460 + 770 = 230230
Step 300: 230230 + 770 = 231000
Step 301: 231000 + 770 = 231770
Step 302: 231770 + 770 = 232540
Step 303: 232540 + 770 = 233310
Step 304: 233310 + 770 = 234080
Step 305: 234080 + 770 = 234850
Step 306: 234850 + 770 = 235620
Step 307: 235620 + 770 = 236390
Step 308: 236390 + 770 = 237160
Step 309: 237160 + 770 = 237930
Step 310: 237930 + 770 = 238700
Step 311: 238700 + 770 = 239470
Step 312: 239470 + 770 = 240240
Step 313: 240240 + 770 = 241010
Step 314: 241010 + 770 = 241780
Step 315: 241780 + 770 = 242550
Step 316: 242550 + 770 = 243320
Step 317: 243320 + 770 = 244090
Step 318: 244090 + 770 = 244860
Step 319: 244860 + 770 = 245630
Step 320: 245630 + 770 = 246400
Step 321: 246400 + 770 = 247170
Step 322: 247170 + 770 = 247940
Step 323: 247940 + 770 = 248710
Step 324: 248710 + 770 = 249480
Step 325: 249480 + 770 = 250250
Step 326: 250250 + 770 = 251020
Step 327: 251020 + 770 = 251790
Step 328: 251790 + 770 = 252560
Step 329: 252560 + 770 = 253330
Step 330: 253330 + 770 = 254100
Step 331: 254100 + 770 = 254870
Step 332: 254870 + 770 = 255640
Step 333: 255640 + 770 = 256410
Step 334: 256410 + 770 = 257180
Step 335: 257180 + 770 = 257950
Step 336: 257950 + 770 = 258720
Step 337: 258720 + 770 = 259490
Step 338: 259490 + 770 = 260260
Step 339: 260260 + 770 = 261030
Step 340: 261030 + 770 = 261800
Step 341: 261800 + 770 = 262570
Step 342: 262570 + 770 = 263340
Step 343: 263340 + 770 = 264110
Step 344: 264110 + 770 = 264880
Step 345: 264880 + 770 = 265650
Step 346: 265650 + 770 = 266420
Step 347: 266420 + 770 = 267190
Step 348: 267190 + 770 = 267960
Step 349: 267960 + 770 = 268730
Step 350: 268730 + 770 = 269500
Step 351: 269500 + 770 = 270270
Step 352: 270270 + 770 = 271040
Step 353: 271040 + 770 = 271810
Step 354: 271810 + 770 = 272580
Step 355: 272580 + 770 = 273350
Step 356: 273350 + 770 = 274120
Step 357: 274120 + 770 = 274890
Step 358: 274890 + 770 = 275660
Step 359: 275660 + 770 = 276430
Step 360: 276430 + 770 = 277200
Step 361: 277200 + 770 = 277970
Step 362: 277970 + 770 = 278740
Step 363: 278740 + 770 = 279510
Step 364: 279510 + 770 = 280280
Step 365: 280280 + 770 = 281050
Step 366: 281050 + 770 = 281820
Step 367: 281820 + 770 = 282590
Step 368: 282590 + 770 = 283360
Step 369: 283360 + 770 = 284130
Step 370: 284130 + 770 = 284900
Step 371: 284900 + 770 = 285670
Step 372: 285670 + 770 = 286440
Step 373: 286440 + 770 = 287210
Step 374: 287210 + 770 = 287980
Step 375: 287980 + 770 = 288750
Step 376: 288750 + 770 = 289520
Step 377: 289520 + 770 = 290290
Step 378: 290290 + 770 = 291060
Step 379: 291060 + 770 = 291830

So, 770*379 = 291830