Alright, let's solve this math problem step by step. First, we have the number 456. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 305. So, we're going to take the number 456 and add it to itself 305 times.
Step 1: 0 + 456 = 456
Step 2: 456 + 456 = 912
Step 3: 912 + 456 = 1368
Step 4: 1368 + 456 = 1824
Step 5: 1824 + 456 = 2280
Step 6: 2280 + 456 = 2736
Step 7: 2736 + 456 = 3192
Step 8: 3192 + 456 = 3648
Step 9: 3648 + 456 = 4104
Step 10: 4104 + 456 = 4560
Step 11: 4560 + 456 = 5016
Step 12: 5016 + 456 = 5472
Step 13: 5472 + 456 = 5928
Step 14: 5928 + 456 = 6384
Step 15: 6384 + 456 = 6840
Step 16: 6840 + 456 = 7296
Step 17: 7296 + 456 = 7752
Step 18: 7752 + 456 = 8208
Step 19: 8208 + 456 = 8664
Step 20: 8664 + 456 = 9120
Step 21: 9120 + 456 = 9576
Step 22: 9576 + 456 = 10032
Step 23: 10032 + 456 = 10488
Step 24: 10488 + 456 = 10944
Step 25: 10944 + 456 = 11400
Step 26: 11400 + 456 = 11856
Step 27: 11856 + 456 = 12312
Step 28: 12312 + 456 = 12768
Step 29: 12768 + 456 = 13224
Step 30: 13224 + 456 = 13680
Step 31: 13680 + 456 = 14136
Step 32: 14136 + 456 = 14592
Step 33: 14592 + 456 = 15048
Step 34: 15048 + 456 = 15504
Step 35: 15504 + 456 = 15960
Step 36: 15960 + 456 = 16416
Step 37: 16416 + 456 = 16872
Step 38: 16872 + 456 = 17328
Step 39: 17328 + 456 = 17784
Step 40: 17784 + 456 = 18240
Step 41: 18240 + 456 = 18696
Step 42: 18696 + 456 = 19152
Step 43: 19152 + 456 = 19608
Step 44: 19608 + 456 = 20064
Step 45: 20064 + 456 = 20520
Step 46: 20520 + 456 = 20976
Step 47: 20976 + 456 = 21432
Step 48: 21432 + 456 = 21888
Step 49: 21888 + 456 = 22344
Step 50: 22344 + 456 = 22800
Step 51: 22800 + 456 = 23256
Step 52: 23256 + 456 = 23712
Step 53: 23712 + 456 = 24168
Step 54: 24168 + 456 = 24624
Step 55: 24624 + 456 = 25080
Step 56: 25080 + 456 = 25536
Step 57: 25536 + 456 = 25992
Step 58: 25992 + 456 = 26448
Step 59: 26448 + 456 = 26904
Step 60: 26904 + 456 = 27360
Step 61: 27360 + 456 = 27816
Step 62: 27816 + 456 = 28272
Step 63: 28272 + 456 = 28728
Step 64: 28728 + 456 = 29184
Step 65: 29184 + 456 = 29640
Step 66: 29640 + 456 = 30096
Step 67: 30096 + 456 = 30552
Step 68: 30552 + 456 = 31008
Step 69: 31008 + 456 = 31464
Step 70: 31464 + 456 = 31920
Step 71: 31920 + 456 = 32376
Step 72: 32376 + 456 = 32832
Step 73: 32832 + 456 = 33288
Step 74: 33288 + 456 = 33744
Step 75: 33744 + 456 = 34200
Step 76: 34200 + 456 = 34656
Step 77: 34656 + 456 = 35112
Step 78: 35112 + 456 = 35568
Step 79: 35568 + 456 = 36024
Step 80: 36024 + 456 = 36480
Step 81: 36480 + 456 = 36936
Step 82: 36936 + 456 = 37392
Step 83: 37392 + 456 = 37848
Step 84: 37848 + 456 = 38304
Step 85: 38304 + 456 = 38760
Step 86: 38760 + 456 = 39216
Step 87: 39216 + 456 = 39672
Step 88: 39672 + 456 = 40128
Step 89: 40128 + 456 = 40584
Step 90: 40584 + 456 = 41040
Step 91: 41040 + 456 = 41496
Step 92: 41496 + 456 = 41952
Step 93: 41952 + 456 = 42408
Step 94: 42408 + 456 = 42864
Step 95: 42864 + 456 = 43320
Step 96: 43320 + 456 = 43776
Step 97: 43776 + 456 = 44232
Step 98: 44232 + 456 = 44688
Step 99: 44688 + 456 = 45144
Step 100: 45144 + 456 = 45600
Step 101: 45600 + 456 = 46056
Step 102: 46056 + 456 = 46512
Step 103: 46512 + 456 = 46968
Step 104: 46968 + 456 = 47424
Step 105: 47424 + 456 = 47880
Step 106: 47880 + 456 = 48336
Step 107: 48336 + 456 = 48792
Step 108: 48792 + 456 = 49248
Step 109: 49248 + 456 = 49704
Step 110: 49704 + 456 = 50160
Step 111: 50160 + 456 = 50616
Step 112: 50616 + 456 = 51072
Step 113: 51072 + 456 = 51528
Step 114: 51528 + 456 = 51984
Step 115: 51984 + 456 = 52440
Step 116: 52440 + 456 = 52896
Step 117: 52896 + 456 = 53352
Step 118: 53352 + 456 = 53808
Step 119: 53808 + 456 = 54264
Step 120: 54264 + 456 = 54720
Step 121: 54720 + 456 = 55176
Step 122: 55176 + 456 = 55632
Step 123: 55632 + 456 = 56088
Step 124: 56088 + 456 = 56544
Step 125: 56544 + 456 = 57000
Step 126: 57000 + 456 = 57456
Step 127: 57456 + 456 = 57912
Step 128: 57912 + 456 = 58368
Step 129: 58368 + 456 = 58824
Step 130: 58824 + 456 = 59280
Step 131: 59280 + 456 = 59736
Step 132: 59736 + 456 = 60192
Step 133: 60192 + 456 = 60648
Step 134: 60648 + 456 = 61104
Step 135: 61104 + 456 = 61560
Step 136: 61560 + 456 = 62016
Step 137: 62016 + 456 = 62472
Step 138: 62472 + 456 = 62928
Step 139: 62928 + 456 = 63384
Step 140: 63384 + 456 = 63840
Step 141: 63840 + 456 = 64296
Step 142: 64296 + 456 = 64752
Step 143: 64752 + 456 = 65208
Step 144: 65208 + 456 = 65664
Step 145: 65664 + 456 = 66120
Step 146: 66120 + 456 = 66576
Step 147: 66576 + 456 = 67032
Step 148: 67032 + 456 = 67488
Step 149: 67488 + 456 = 67944
Step 150: 67944 + 456 = 68400
Step 151: 68400 + 456 = 68856
Step 152: 68856 + 456 = 69312
Step 153: 69312 + 456 = 69768
Step 154: 69768 + 456 = 70224
Step 155: 70224 + 456 = 70680
Step 156: 70680 + 456 = 71136
Step 157: 71136 + 456 = 71592
Step 158: 71592 + 456 = 72048
Step 159: 72048 + 456 = 72504
Step 160: 72504 + 456 = 72960
Step 161: 72960 + 456 = 73416
Step 162: 73416 + 456 = 73872
Step 163: 73872 + 456 = 74328
Step 164: 74328 + 456 = 74784
Step 165: 74784 + 456 = 75240
Step 166: 75240 + 456 = 75696
Step 167: 75696 + 456 = 76152
Step 168: 76152 + 456 = 76608
Step 169: 76608 + 456 = 77064
Step 170: 77064 + 456 = 77520
Step 171: 77520 + 456 = 77976
Step 172: 77976 + 456 = 78432
Step 173: 78432 + 456 = 78888
Step 174: 78888 + 456 = 79344
Step 175: 79344 + 456 = 79800
Step 176: 79800 + 456 = 80256
Step 177: 80256 + 456 = 80712
Step 178: 80712 + 456 = 81168
Step 179: 81168 + 456 = 81624
Step 180: 81624 + 456 = 82080
Step 181: 82080 + 456 = 82536
Step 182: 82536 + 456 = 82992
Step 183: 82992 + 456 = 83448
Step 184: 83448 + 456 = 83904
Step 185: 83904 + 456 = 84360
Step 186: 84360 + 456 = 84816
Step 187: 84816 + 456 = 85272
Step 188: 85272 + 456 = 85728
Step 189: 85728 + 456 = 86184
Step 190: 86184 + 456 = 86640
Step 191: 86640 + 456 = 87096
Step 192: 87096 + 456 = 87552
Step 193: 87552 + 456 = 88008
Step 194: 88008 + 456 = 88464
Step 195: 88464 + 456 = 88920
Step 196: 88920 + 456 = 89376
Step 197: 89376 + 456 = 89832
Step 198: 89832 + 456 = 90288
Step 199: 90288 + 456 = 90744
Step 200: 90744 + 456 = 91200
Step 201: 91200 + 456 = 91656
Step 202: 91656 + 456 = 92112
Step 203: 92112 + 456 = 92568
Step 204: 92568 + 456 = 93024
Step 205: 93024 + 456 = 93480
Step 206: 93480 + 456 = 93936
Step 207: 93936 + 456 = 94392
Step 208: 94392 + 456 = 94848
Step 209: 94848 + 456 = 95304
Step 210: 95304 + 456 = 95760
Step 211: 95760 + 456 = 96216
Step 212: 96216 + 456 = 96672
Step 213: 96672 + 456 = 97128
Step 214: 97128 + 456 = 97584
Step 215: 97584 + 456 = 98040
Step 216: 98040 + 456 = 98496
Step 217: 98496 + 456 = 98952
Step 218: 98952 + 456 = 99408
Step 219: 99408 + 456 = 99864
Step 220: 99864 + 456 = 100320
Step 221: 100320 + 456 = 100776
Step 222: 100776 + 456 = 101232
Step 223: 101232 + 456 = 101688
Step 224: 101688 + 456 = 102144
Step 225: 102144 + 456 = 102600
Step 226: 102600 + 456 = 103056
Step 227: 103056 + 456 = 103512
Step 228: 103512 + 456 = 103968
Step 229: 103968 + 456 = 104424
Step 230: 104424 + 456 = 104880
Step 231: 104880 + 456 = 105336
Step 232: 105336 + 456 = 105792
Step 233: 105792 + 456 = 106248
Step 234: 106248 + 456 = 106704
Step 235: 106704 + 456 = 107160
Step 236: 107160 + 456 = 107616
Step 237: 107616 + 456 = 108072
Step 238: 108072 + 456 = 108528
Step 239: 108528 + 456 = 108984
Step 240: 108984 + 456 = 109440
Step 241: 109440 + 456 = 109896
Step 242: 109896 + 456 = 110352
Step 243: 110352 + 456 = 110808
Step 244: 110808 + 456 = 111264
Step 245: 111264 + 456 = 111720
Step 246: 111720 + 456 = 112176
Step 247: 112176 + 456 = 112632
Step 248: 112632 + 456 = 113088
Step 249: 113088 + 456 = 113544
Step 250: 113544 + 456 = 114000
Step 251: 114000 + 456 = 114456
Step 252: 114456 + 456 = 114912
Step 253: 114912 + 456 = 115368
Step 254: 115368 + 456 = 115824
Step 255: 115824 + 456 = 116280
Step 256: 116280 + 456 = 116736
Step 257: 116736 + 456 = 117192
Step 258: 117192 + 456 = 117648
Step 259: 117648 + 456 = 118104
Step 260: 118104 + 456 = 118560
Step 261: 118560 + 456 = 119016
Step 262: 119016 + 456 = 119472
Step 263: 119472 + 456 = 119928
Step 264: 119928 + 456 = 120384
Step 265: 120384 + 456 = 120840
Step 266: 120840 + 456 = 121296
Step 267: 121296 + 456 = 121752
Step 268: 121752 + 456 = 122208
Step 269: 122208 + 456 = 122664
Step 270: 122664 + 456 = 123120
Step 271: 123120 + 456 = 123576
Step 272: 123576 + 456 = 124032
Step 273: 124032 + 456 = 124488
Step 274: 124488 + 456 = 124944
Step 275: 124944 + 456 = 125400
Step 276: 125400 + 456 = 125856
Step 277: 125856 + 456 = 126312
Step 278: 126312 + 456 = 126768
Step 279: 126768 + 456 = 127224
Step 280: 127224 + 456 = 127680
Step 281: 127680 + 456 = 128136
Step 282: 128136 + 456 = 128592
Step 283: 128592 + 456 = 129048
Step 284: 129048 + 456 = 129504
Step 285: 129504 + 456 = 129960
Step 286: 129960 + 456 = 130416
Step 287: 130416 + 456 = 130872
Step 288: 130872 + 456 = 131328
Step 289: 131328 + 456 = 131784
Step 290: 131784 + 456 = 132240
Step 291: 132240 + 456 = 132696
Step 292: 132696 + 456 = 133152
Step 293: 133152 + 456 = 133608
Step 294: 133608 + 456 = 134064
Step 295: 134064 + 456 = 134520
Step 296: 134520 + 456 = 134976
Step 297: 134976 + 456 = 135432
Step 298: 135432 + 456 = 135888
Step 299: 135888 + 456 = 136344
Step 300: 136344 + 456 = 136800
Step 301: 136800 + 456 = 137256
Step 302: 137256 + 456 = 137712
Step 303: 137712 + 456 = 138168
Step 304: 138168 + 456 = 138624
Step 305: 138624 + 456 = 139080

So, 456*305 = 139080