Let's roll up our sleeves and solve this. We have 609 and we're going to multiply it by 240, essentially adding 609 to itself 240 times.
Step 1: 0 + 609 = 609
Step 2: 609 + 609 = 1218
Step 3: 1218 + 609 = 1827
Step 4: 1827 + 609 = 2436
Step 5: 2436 + 609 = 3045
Step 6: 3045 + 609 = 3654
Step 7: 3654 + 609 = 4263
Step 8: 4263 + 609 = 4872
Step 9: 4872 + 609 = 5481
Step 10: 5481 + 609 = 6090
Step 11: 6090 + 609 = 6699
Step 12: 6699 + 609 = 7308
Step 13: 7308 + 609 = 7917
Step 14: 7917 + 609 = 8526
Step 15: 8526 + 609 = 9135
Step 16: 9135 + 609 = 9744
Step 17: 9744 + 609 = 10353
Step 18: 10353 + 609 = 10962
Step 19: 10962 + 609 = 11571
Step 20: 11571 + 609 = 12180
Step 21: 12180 + 609 = 12789
Step 22: 12789 + 609 = 13398
Step 23: 13398 + 609 = 14007
Step 24: 14007 + 609 = 14616
Step 25: 14616 + 609 = 15225
Step 26: 15225 + 609 = 15834
Step 27: 15834 + 609 = 16443
Step 28: 16443 + 609 = 17052
Step 29: 17052 + 609 = 17661
Step 30: 17661 + 609 = 18270
Step 31: 18270 + 609 = 18879
Step 32: 18879 + 609 = 19488
Step 33: 19488 + 609 = 20097
Step 34: 20097 + 609 = 20706
Step 35: 20706 + 609 = 21315
Step 36: 21315 + 609 = 21924
Step 37: 21924 + 609 = 22533
Step 38: 22533 + 609 = 23142
Step 39: 23142 + 609 = 23751
Step 40: 23751 + 609 = 24360
Step 41: 24360 + 609 = 24969
Step 42: 24969 + 609 = 25578
Step 43: 25578 + 609 = 26187
Step 44: 26187 + 609 = 26796
Step 45: 26796 + 609 = 27405
Step 46: 27405 + 609 = 28014
Step 47: 28014 + 609 = 28623
Step 48: 28623 + 609 = 29232
Step 49: 29232 + 609 = 29841
Step 50: 29841 + 609 = 30450
Step 51: 30450 + 609 = 31059
Step 52: 31059 + 609 = 31668
Step 53: 31668 + 609 = 32277
Step 54: 32277 + 609 = 32886
Step 55: 32886 + 609 = 33495
Step 56: 33495 + 609 = 34104
Step 57: 34104 + 609 = 34713
Step 58: 34713 + 609 = 35322
Step 59: 35322 + 609 = 35931
Step 60: 35931 + 609 = 36540
Step 61: 36540 + 609 = 37149
Step 62: 37149 + 609 = 37758
Step 63: 37758 + 609 = 38367
Step 64: 38367 + 609 = 38976
Step 65: 38976 + 609 = 39585
Step 66: 39585 + 609 = 40194
Step 67: 40194 + 609 = 40803
Step 68: 40803 + 609 = 41412
Step 69: 41412 + 609 = 42021
Step 70: 42021 + 609 = 42630
Step 71: 42630 + 609 = 43239
Step 72: 43239 + 609 = 43848
Step 73: 43848 + 609 = 44457
Step 74: 44457 + 609 = 45066
Step 75: 45066 + 609 = 45675
Step 76: 45675 + 609 = 46284
Step 77: 46284 + 609 = 46893
Step 78: 46893 + 609 = 47502
Step 79: 47502 + 609 = 48111
Step 80: 48111 + 609 = 48720
Step 81: 48720 + 609 = 49329
Step 82: 49329 + 609 = 49938
Step 83: 49938 + 609 = 50547
Step 84: 50547 + 609 = 51156
Step 85: 51156 + 609 = 51765
Step 86: 51765 + 609 = 52374
Step 87: 52374 + 609 = 52983
Step 88: 52983 + 609 = 53592
Step 89: 53592 + 609 = 54201
Step 90: 54201 + 609 = 54810
Step 91: 54810 + 609 = 55419
Step 92: 55419 + 609 = 56028
Step 93: 56028 + 609 = 56637
Step 94: 56637 + 609 = 57246
Step 95: 57246 + 609 = 57855
Step 96: 57855 + 609 = 58464
Step 97: 58464 + 609 = 59073
Step 98: 59073 + 609 = 59682
Step 99: 59682 + 609 = 60291
Step 100: 60291 + 609 = 60900
Step 101: 60900 + 609 = 61509
Step 102: 61509 + 609 = 62118
Step 103: 62118 + 609 = 62727
Step 104: 62727 + 609 = 63336
Step 105: 63336 + 609 = 63945
Step 106: 63945 + 609 = 64554
Step 107: 64554 + 609 = 65163
Step 108: 65163 + 609 = 65772
Step 109: 65772 + 609 = 66381
Step 110: 66381 + 609 = 66990
Step 111: 66990 + 609 = 67599
Step 112: 67599 + 609 = 68208
Step 113: 68208 + 609 = 68817
Step 114: 68817 + 609 = 69426
Step 115: 69426 + 609 = 70035
Step 116: 70035 + 609 = 70644
Step 117: 70644 + 609 = 71253
Step 118: 71253 + 609 = 71862
Step 119: 71862 + 609 = 72471
Step 120: 72471 + 609 = 73080
Step 121: 73080 + 609 = 73689
Step 122: 73689 + 609 = 74298
Step 123: 74298 + 609 = 74907
Step 124: 74907 + 609 = 75516
Step 125: 75516 + 609 = 76125
Step 126: 76125 + 609 = 76734
Step 127: 76734 + 609 = 77343
Step 128: 77343 + 609 = 77952
Step 129: 77952 + 609 = 78561
Step 130: 78561 + 609 = 79170
Step 131: 79170 + 609 = 79779
Step 132: 79779 + 609 = 80388
Step 133: 80388 + 609 = 80997
Step 134: 80997 + 609 = 81606
Step 135: 81606 + 609 = 82215
Step 136: 82215 + 609 = 82824
Step 137: 82824 + 609 = 83433
Step 138: 83433 + 609 = 84042
Step 139: 84042 + 609 = 84651
Step 140: 84651 + 609 = 85260
Step 141: 85260 + 609 = 85869
Step 142: 85869 + 609 = 86478
Step 143: 86478 + 609 = 87087
Step 144: 87087 + 609 = 87696
Step 145: 87696 + 609 = 88305
Step 146: 88305 + 609 = 88914
Step 147: 88914 + 609 = 89523
Step 148: 89523 + 609 = 90132
Step 149: 90132 + 609 = 90741
Step 150: 90741 + 609 = 91350
Step 151: 91350 + 609 = 91959
Step 152: 91959 + 609 = 92568
Step 153: 92568 + 609 = 93177
Step 154: 93177 + 609 = 93786
Step 155: 93786 + 609 = 94395
Step 156: 94395 + 609 = 95004
Step 157: 95004 + 609 = 95613
Step 158: 95613 + 609 = 96222
Step 159: 96222 + 609 = 96831
Step 160: 96831 + 609 = 97440
Step 161: 97440 + 609 = 98049
Step 162: 98049 + 609 = 98658
Step 163: 98658 + 609 = 99267
Step 164: 99267 + 609 = 99876
Step 165: 99876 + 609 = 100485
Step 166: 100485 + 609 = 101094
Step 167: 101094 + 609 = 101703
Step 168: 101703 + 609 = 102312
Step 169: 102312 + 609 = 102921
Step 170: 102921 + 609 = 103530
Step 171: 103530 + 609 = 104139
Step 172: 104139 + 609 = 104748
Step 173: 104748 + 609 = 105357
Step 174: 105357 + 609 = 105966
Step 175: 105966 + 609 = 106575
Step 176: 106575 + 609 = 107184
Step 177: 107184 + 609 = 107793
Step 178: 107793 + 609 = 108402
Step 179: 108402 + 609 = 109011
Step 180: 109011 + 609 = 109620
Step 181: 109620 + 609 = 110229
Step 182: 110229 + 609 = 110838
Step 183: 110838 + 609 = 111447
Step 184: 111447 + 609 = 112056
Step 185: 112056 + 609 = 112665
Step 186: 112665 + 609 = 113274
Step 187: 113274 + 609 = 113883
Step 188: 113883 + 609 = 114492
Step 189: 114492 + 609 = 115101
Step 190: 115101 + 609 = 115710
Step 191: 115710 + 609 = 116319
Step 192: 116319 + 609 = 116928
Step 193: 116928 + 609 = 117537
Step 194: 117537 + 609 = 118146
Step 195: 118146 + 609 = 118755
Step 196: 118755 + 609 = 119364
Step 197: 119364 + 609 = 119973
Step 198: 119973 + 609 = 120582
Step 199: 120582 + 609 = 121191
Step 200: 121191 + 609 = 121800
Step 201: 121800 + 609 = 122409
Step 202: 122409 + 609 = 123018
Step 203: 123018 + 609 = 123627
Step 204: 123627 + 609 = 124236
Step 205: 124236 + 609 = 124845
Step 206: 124845 + 609 = 125454
Step 207: 125454 + 609 = 126063
Step 208: 126063 + 609 = 126672
Step 209: 126672 + 609 = 127281
Step 210: 127281 + 609 = 127890
Step 211: 127890 + 609 = 128499
Step 212: 128499 + 609 = 129108
Step 213: 129108 + 609 = 129717
Step 214: 129717 + 609 = 130326
Step 215: 130326 + 609 = 130935
Step 216: 130935 + 609 = 131544
Step 217: 131544 + 609 = 132153
Step 218: 132153 + 609 = 132762
Step 219: 132762 + 609 = 133371
Step 220: 133371 + 609 = 133980
Step 221: 133980 + 609 = 134589
Step 222: 134589 + 609 = 135198
Step 223: 135198 + 609 = 135807
Step 224: 135807 + 609 = 136416
Step 225: 136416 + 609 = 137025
Step 226: 137025 + 609 = 137634
Step 227: 137634 + 609 = 138243
Step 228: 138243 + 609 = 138852
Step 229: 138852 + 609 = 139461
Step 230: 139461 + 609 = 140070
Step 231: 140070 + 609 = 140679
Step 232: 140679 + 609 = 141288
Step 233: 141288 + 609 = 141897
Step 234: 141897 + 609 = 142506
Step 235: 142506 + 609 = 143115
Step 236: 143115 + 609 = 143724
Step 237: 143724 + 609 = 144333
Step 238: 144333 + 609 = 144942
Step 239: 144942 + 609 = 145551
Step 240: 145551 + 609 = 146160

So, 609*240 = 146160