OK, let's work through this together. We're starting with 235 and we're going to multiply it by 306, which means we add 235 to itself 306 times.
Step 1: 0 + 235 = 235
Step 2: 235 + 235 = 470
Step 3: 470 + 235 = 705
Step 4: 705 + 235 = 940
Step 5: 940 + 235 = 1175
Step 6: 1175 + 235 = 1410
Step 7: 1410 + 235 = 1645
Step 8: 1645 + 235 = 1880
Step 9: 1880 + 235 = 2115
Step 10: 2115 + 235 = 2350
Step 11: 2350 + 235 = 2585
Step 12: 2585 + 235 = 2820
Step 13: 2820 + 235 = 3055
Step 14: 3055 + 235 = 3290
Step 15: 3290 + 235 = 3525
Step 16: 3525 + 235 = 3760
Step 17: 3760 + 235 = 3995
Step 18: 3995 + 235 = 4230
Step 19: 4230 + 235 = 4465
Step 20: 4465 + 235 = 4700
Step 21: 4700 + 235 = 4935
Step 22: 4935 + 235 = 5170
Step 23: 5170 + 235 = 5405
Step 24: 5405 + 235 = 5640
Step 25: 5640 + 235 = 5875
Step 26: 5875 + 235 = 6110
Step 27: 6110 + 235 = 6345
Step 28: 6345 + 235 = 6580
Step 29: 6580 + 235 = 6815
Step 30: 6815 + 235 = 7050
Step 31: 7050 + 235 = 7285
Step 32: 7285 + 235 = 7520
Step 33: 7520 + 235 = 7755
Step 34: 7755 + 235 = 7990
Step 35: 7990 + 235 = 8225
Step 36: 8225 + 235 = 8460
Step 37: 8460 + 235 = 8695
Step 38: 8695 + 235 = 8930
Step 39: 8930 + 235 = 9165
Step 40: 9165 + 235 = 9400
Step 41: 9400 + 235 = 9635
Step 42: 9635 + 235 = 9870
Step 43: 9870 + 235 = 10105
Step 44: 10105 + 235 = 10340
Step 45: 10340 + 235 = 10575
Step 46: 10575 + 235 = 10810
Step 47: 10810 + 235 = 11045
Step 48: 11045 + 235 = 11280
Step 49: 11280 + 235 = 11515
Step 50: 11515 + 235 = 11750
Step 51: 11750 + 235 = 11985
Step 52: 11985 + 235 = 12220
Step 53: 12220 + 235 = 12455
Step 54: 12455 + 235 = 12690
Step 55: 12690 + 235 = 12925
Step 56: 12925 + 235 = 13160
Step 57: 13160 + 235 = 13395
Step 58: 13395 + 235 = 13630
Step 59: 13630 + 235 = 13865
Step 60: 13865 + 235 = 14100
Step 61: 14100 + 235 = 14335
Step 62: 14335 + 235 = 14570
Step 63: 14570 + 235 = 14805
Step 64: 14805 + 235 = 15040
Step 65: 15040 + 235 = 15275
Step 66: 15275 + 235 = 15510
Step 67: 15510 + 235 = 15745
Step 68: 15745 + 235 = 15980
Step 69: 15980 + 235 = 16215
Step 70: 16215 + 235 = 16450
Step 71: 16450 + 235 = 16685
Step 72: 16685 + 235 = 16920
Step 73: 16920 + 235 = 17155
Step 74: 17155 + 235 = 17390
Step 75: 17390 + 235 = 17625
Step 76: 17625 + 235 = 17860
Step 77: 17860 + 235 = 18095
Step 78: 18095 + 235 = 18330
Step 79: 18330 + 235 = 18565
Step 80: 18565 + 235 = 18800
Step 81: 18800 + 235 = 19035
Step 82: 19035 + 235 = 19270
Step 83: 19270 + 235 = 19505
Step 84: 19505 + 235 = 19740
Step 85: 19740 + 235 = 19975
Step 86: 19975 + 235 = 20210
Step 87: 20210 + 235 = 20445
Step 88: 20445 + 235 = 20680
Step 89: 20680 + 235 = 20915
Step 90: 20915 + 235 = 21150
Step 91: 21150 + 235 = 21385
Step 92: 21385 + 235 = 21620
Step 93: 21620 + 235 = 21855
Step 94: 21855 + 235 = 22090
Step 95: 22090 + 235 = 22325
Step 96: 22325 + 235 = 22560
Step 97: 22560 + 235 = 22795
Step 98: 22795 + 235 = 23030
Step 99: 23030 + 235 = 23265
Step 100: 23265 + 235 = 23500
Step 101: 23500 + 235 = 23735
Step 102: 23735 + 235 = 23970
Step 103: 23970 + 235 = 24205
Step 104: 24205 + 235 = 24440
Step 105: 24440 + 235 = 24675
Step 106: 24675 + 235 = 24910
Step 107: 24910 + 235 = 25145
Step 108: 25145 + 235 = 25380
Step 109: 25380 + 235 = 25615
Step 110: 25615 + 235 = 25850
Step 111: 25850 + 235 = 26085
Step 112: 26085 + 235 = 26320
Step 113: 26320 + 235 = 26555
Step 114: 26555 + 235 = 26790
Step 115: 26790 + 235 = 27025
Step 116: 27025 + 235 = 27260
Step 117: 27260 + 235 = 27495
Step 118: 27495 + 235 = 27730
Step 119: 27730 + 235 = 27965
Step 120: 27965 + 235 = 28200
Step 121: 28200 + 235 = 28435
Step 122: 28435 + 235 = 28670
Step 123: 28670 + 235 = 28905
Step 124: 28905 + 235 = 29140
Step 125: 29140 + 235 = 29375
Step 126: 29375 + 235 = 29610
Step 127: 29610 + 235 = 29845
Step 128: 29845 + 235 = 30080
Step 129: 30080 + 235 = 30315
Step 130: 30315 + 235 = 30550
Step 131: 30550 + 235 = 30785
Step 132: 30785 + 235 = 31020
Step 133: 31020 + 235 = 31255
Step 134: 31255 + 235 = 31490
Step 135: 31490 + 235 = 31725
Step 136: 31725 + 235 = 31960
Step 137: 31960 + 235 = 32195
Step 138: 32195 + 235 = 32430
Step 139: 32430 + 235 = 32665
Step 140: 32665 + 235 = 32900
Step 141: 32900 + 235 = 33135
Step 142: 33135 + 235 = 33370
Step 143: 33370 + 235 = 33605
Step 144: 33605 + 235 = 33840
Step 145: 33840 + 235 = 34075
Step 146: 34075 + 235 = 34310
Step 147: 34310 + 235 = 34545
Step 148: 34545 + 235 = 34780
Step 149: 34780 + 235 = 35015
Step 150: 35015 + 235 = 35250
Step 151: 35250 + 235 = 35485
Step 152: 35485 + 235 = 35720
Step 153: 35720 + 235 = 35955
Step 154: 35955 + 235 = 36190
Step 155: 36190 + 235 = 36425
Step 156: 36425 + 235 = 36660
Step 157: 36660 + 235 = 36895
Step 158: 36895 + 235 = 37130
Step 159: 37130 + 235 = 37365
Step 160: 37365 + 235 = 37600
Step 161: 37600 + 235 = 37835
Step 162: 37835 + 235 = 38070
Step 163: 38070 + 235 = 38305
Step 164: 38305 + 235 = 38540
Step 165: 38540 + 235 = 38775
Step 166: 38775 + 235 = 39010
Step 167: 39010 + 235 = 39245
Step 168: 39245 + 235 = 39480
Step 169: 39480 + 235 = 39715
Step 170: 39715 + 235 = 39950
Step 171: 39950 + 235 = 40185
Step 172: 40185 + 235 = 40420
Step 173: 40420 + 235 = 40655
Step 174: 40655 + 235 = 40890
Step 175: 40890 + 235 = 41125
Step 176: 41125 + 235 = 41360
Step 177: 41360 + 235 = 41595
Step 178: 41595 + 235 = 41830
Step 179: 41830 + 235 = 42065
Step 180: 42065 + 235 = 42300
Step 181: 42300 + 235 = 42535
Step 182: 42535 + 235 = 42770
Step 183: 42770 + 235 = 43005
Step 184: 43005 + 235 = 43240
Step 185: 43240 + 235 = 43475
Step 186: 43475 + 235 = 43710
Step 187: 43710 + 235 = 43945
Step 188: 43945 + 235 = 44180
Step 189: 44180 + 235 = 44415
Step 190: 44415 + 235 = 44650
Step 191: 44650 + 235 = 44885
Step 192: 44885 + 235 = 45120
Step 193: 45120 + 235 = 45355
Step 194: 45355 + 235 = 45590
Step 195: 45590 + 235 = 45825
Step 196: 45825 + 235 = 46060
Step 197: 46060 + 235 = 46295
Step 198: 46295 + 235 = 46530
Step 199: 46530 + 235 = 46765
Step 200: 46765 + 235 = 47000
Step 201: 47000 + 235 = 47235
Step 202: 47235 + 235 = 47470
Step 203: 47470 + 235 = 47705
Step 204: 47705 + 235 = 47940
Step 205: 47940 + 235 = 48175
Step 206: 48175 + 235 = 48410
Step 207: 48410 + 235 = 48645
Step 208: 48645 + 235 = 48880
Step 209: 48880 + 235 = 49115
Step 210: 49115 + 235 = 49350
Step 211: 49350 + 235 = 49585
Step 212: 49585 + 235 = 49820
Step 213: 49820 + 235 = 50055
Step 214: 50055 + 235 = 50290
Step 215: 50290 + 235 = 50525
Step 216: 50525 + 235 = 50760
Step 217: 50760 + 235 = 50995
Step 218: 50995 + 235 = 51230
Step 219: 51230 + 235 = 51465
Step 220: 51465 + 235 = 51700
Step 221: 51700 + 235 = 51935
Step 222: 51935 + 235 = 52170
Step 223: 52170 + 235 = 52405
Step 224: 52405 + 235 = 52640
Step 225: 52640 + 235 = 52875
Step 226: 52875 + 235 = 53110
Step 227: 53110 + 235 = 53345
Step 228: 53345 + 235 = 53580
Step 229: 53580 + 235 = 53815
Step 230: 53815 + 235 = 54050
Step 231: 54050 + 235 = 54285
Step 232: 54285 + 235 = 54520
Step 233: 54520 + 235 = 54755
Step 234: 54755 + 235 = 54990
Step 235: 54990 + 235 = 55225
Step 236: 55225 + 235 = 55460
Step 237: 55460 + 235 = 55695
Step 238: 55695 + 235 = 55930
Step 239: 55930 + 235 = 56165
Step 240: 56165 + 235 = 56400
Step 241: 56400 + 235 = 56635
Step 242: 56635 + 235 = 56870
Step 243: 56870 + 235 = 57105
Step 244: 57105 + 235 = 57340
Step 245: 57340 + 235 = 57575
Step 246: 57575 + 235 = 57810
Step 247: 57810 + 235 = 58045
Step 248: 58045 + 235 = 58280
Step 249: 58280 + 235 = 58515
Step 250: 58515 + 235 = 58750
Step 251: 58750 + 235 = 58985
Step 252: 58985 + 235 = 59220
Step 253: 59220 + 235 = 59455
Step 254: 59455 + 235 = 59690
Step 255: 59690 + 235 = 59925
Step 256: 59925 + 235 = 60160
Step 257: 60160 + 235 = 60395
Step 258: 60395 + 235 = 60630
Step 259: 60630 + 235 = 60865
Step 260: 60865 + 235 = 61100
Step 261: 61100 + 235 = 61335
Step 262: 61335 + 235 = 61570
Step 263: 61570 + 235 = 61805
Step 264: 61805 + 235 = 62040
Step 265: 62040 + 235 = 62275
Step 266: 62275 + 235 = 62510
Step 267: 62510 + 235 = 62745
Step 268: 62745 + 235 = 62980
Step 269: 62980 + 235 = 63215
Step 270: 63215 + 235 = 63450
Step 271: 63450 + 235 = 63685
Step 272: 63685 + 235 = 63920
Step 273: 63920 + 235 = 64155
Step 274: 64155 + 235 = 64390
Step 275: 64390 + 235 = 64625
Step 276: 64625 + 235 = 64860
Step 277: 64860 + 235 = 65095
Step 278: 65095 + 235 = 65330
Step 279: 65330 + 235 = 65565
Step 280: 65565 + 235 = 65800
Step 281: 65800 + 235 = 66035
Step 282: 66035 + 235 = 66270
Step 283: 66270 + 235 = 66505
Step 284: 66505 + 235 = 66740
Step 285: 66740 + 235 = 66975
Step 286: 66975 + 235 = 67210
Step 287: 67210 + 235 = 67445
Step 288: 67445 + 235 = 67680
Step 289: 67680 + 235 = 67915
Step 290: 67915 + 235 = 68150
Step 291: 68150 + 235 = 68385
Step 292: 68385 + 235 = 68620
Step 293: 68620 + 235 = 68855
Step 294: 68855 + 235 = 69090
Step 295: 69090 + 235 = 69325
Step 296: 69325 + 235 = 69560
Step 297: 69560 + 235 = 69795
Step 298: 69795 + 235 = 70030
Step 299: 70030 + 235 = 70265
Step 300: 70265 + 235 = 70500
Step 301: 70500 + 235 = 70735
Step 302: 70735 + 235 = 70970
Step 303: 70970 + 235 = 71205
Step 304: 71205 + 235 = 71440
Step 305: 71440 + 235 = 71675
Step 306: 71675 + 235 = 71910

So, 235*306 = 71910