OK, let's work through this together. We're starting with 600 and we're going to multiply it by 247, which means we add 600 to itself 247 times.
Step 1: 0 + 600 = 600
Step 2: 600 + 600 = 1200
Step 3: 1200 + 600 = 1800
Step 4: 1800 + 600 = 2400
Step 5: 2400 + 600 = 3000
Step 6: 3000 + 600 = 3600
Step 7: 3600 + 600 = 4200
Step 8: 4200 + 600 = 4800
Step 9: 4800 + 600 = 5400
Step 10: 5400 + 600 = 6000
Step 11: 6000 + 600 = 6600
Step 12: 6600 + 600 = 7200
Step 13: 7200 + 600 = 7800
Step 14: 7800 + 600 = 8400
Step 15: 8400 + 600 = 9000
Step 16: 9000 + 600 = 9600
Step 17: 9600 + 600 = 10200
Step 18: 10200 + 600 = 10800
Step 19: 10800 + 600 = 11400
Step 20: 11400 + 600 = 12000
Step 21: 12000 + 600 = 12600
Step 22: 12600 + 600 = 13200
Step 23: 13200 + 600 = 13800
Step 24: 13800 + 600 = 14400
Step 25: 14400 + 600 = 15000
Step 26: 15000 + 600 = 15600
Step 27: 15600 + 600 = 16200
Step 28: 16200 + 600 = 16800
Step 29: 16800 + 600 = 17400
Step 30: 17400 + 600 = 18000
Step 31: 18000 + 600 = 18600
Step 32: 18600 + 600 = 19200
Step 33: 19200 + 600 = 19800
Step 34: 19800 + 600 = 20400
Step 35: 20400 + 600 = 21000
Step 36: 21000 + 600 = 21600
Step 37: 21600 + 600 = 22200
Step 38: 22200 + 600 = 22800
Step 39: 22800 + 600 = 23400
Step 40: 23400 + 600 = 24000
Step 41: 24000 + 600 = 24600
Step 42: 24600 + 600 = 25200
Step 43: 25200 + 600 = 25800
Step 44: 25800 + 600 = 26400
Step 45: 26400 + 600 = 27000
Step 46: 27000 + 600 = 27600
Step 47: 27600 + 600 = 28200
Step 48: 28200 + 600 = 28800
Step 49: 28800 + 600 = 29400
Step 50: 29400 + 600 = 30000
Step 51: 30000 + 600 = 30600
Step 52: 30600 + 600 = 31200
Step 53: 31200 + 600 = 31800
Step 54: 31800 + 600 = 32400
Step 55: 32400 + 600 = 33000
Step 56: 33000 + 600 = 33600
Step 57: 33600 + 600 = 34200
Step 58: 34200 + 600 = 34800
Step 59: 34800 + 600 = 35400
Step 60: 35400 + 600 = 36000
Step 61: 36000 + 600 = 36600
Step 62: 36600 + 600 = 37200
Step 63: 37200 + 600 = 37800
Step 64: 37800 + 600 = 38400
Step 65: 38400 + 600 = 39000
Step 66: 39000 + 600 = 39600
Step 67: 39600 + 600 = 40200
Step 68: 40200 + 600 = 40800
Step 69: 40800 + 600 = 41400
Step 70: 41400 + 600 = 42000
Step 71: 42000 + 600 = 42600
Step 72: 42600 + 600 = 43200
Step 73: 43200 + 600 = 43800
Step 74: 43800 + 600 = 44400
Step 75: 44400 + 600 = 45000
Step 76: 45000 + 600 = 45600
Step 77: 45600 + 600 = 46200
Step 78: 46200 + 600 = 46800
Step 79: 46800 + 600 = 47400
Step 80: 47400 + 600 = 48000
Step 81: 48000 + 600 = 48600
Step 82: 48600 + 600 = 49200
Step 83: 49200 + 600 = 49800
Step 84: 49800 + 600 = 50400
Step 85: 50400 + 600 = 51000
Step 86: 51000 + 600 = 51600
Step 87: 51600 + 600 = 52200
Step 88: 52200 + 600 = 52800
Step 89: 52800 + 600 = 53400
Step 90: 53400 + 600 = 54000
Step 91: 54000 + 600 = 54600
Step 92: 54600 + 600 = 55200
Step 93: 55200 + 600 = 55800
Step 94: 55800 + 600 = 56400
Step 95: 56400 + 600 = 57000
Step 96: 57000 + 600 = 57600
Step 97: 57600 + 600 = 58200
Step 98: 58200 + 600 = 58800
Step 99: 58800 + 600 = 59400
Step 100: 59400 + 600 = 60000
Step 101: 60000 + 600 = 60600
Step 102: 60600 + 600 = 61200
Step 103: 61200 + 600 = 61800
Step 104: 61800 + 600 = 62400
Step 105: 62400 + 600 = 63000
Step 106: 63000 + 600 = 63600
Step 107: 63600 + 600 = 64200
Step 108: 64200 + 600 = 64800
Step 109: 64800 + 600 = 65400
Step 110: 65400 + 600 = 66000
Step 111: 66000 + 600 = 66600
Step 112: 66600 + 600 = 67200
Step 113: 67200 + 600 = 67800
Step 114: 67800 + 600 = 68400
Step 115: 68400 + 600 = 69000
Step 116: 69000 + 600 = 69600
Step 117: 69600 + 600 = 70200
Step 118: 70200 + 600 = 70800
Step 119: 70800 + 600 = 71400
Step 120: 71400 + 600 = 72000
Step 121: 72000 + 600 = 72600
Step 122: 72600 + 600 = 73200
Step 123: 73200 + 600 = 73800
Step 124: 73800 + 600 = 74400
Step 125: 74400 + 600 = 75000
Step 126: 75000 + 600 = 75600
Step 127: 75600 + 600 = 76200
Step 128: 76200 + 600 = 76800
Step 129: 76800 + 600 = 77400
Step 130: 77400 + 600 = 78000
Step 131: 78000 + 600 = 78600
Step 132: 78600 + 600 = 79200
Step 133: 79200 + 600 = 79800
Step 134: 79800 + 600 = 80400
Step 135: 80400 + 600 = 81000
Step 136: 81000 + 600 = 81600
Step 137: 81600 + 600 = 82200
Step 138: 82200 + 600 = 82800
Step 139: 82800 + 600 = 83400
Step 140: 83400 + 600 = 84000
Step 141: 84000 + 600 = 84600
Step 142: 84600 + 600 = 85200
Step 143: 85200 + 600 = 85800
Step 144: 85800 + 600 = 86400
Step 145: 86400 + 600 = 87000
Step 146: 87000 + 600 = 87600
Step 147: 87600 + 600 = 88200
Step 148: 88200 + 600 = 88800
Step 149: 88800 + 600 = 89400
Step 150: 89400 + 600 = 90000
Step 151: 90000 + 600 = 90600
Step 152: 90600 + 600 = 91200
Step 153: 91200 + 600 = 91800
Step 154: 91800 + 600 = 92400
Step 155: 92400 + 600 = 93000
Step 156: 93000 + 600 = 93600
Step 157: 93600 + 600 = 94200
Step 158: 94200 + 600 = 94800
Step 159: 94800 + 600 = 95400
Step 160: 95400 + 600 = 96000
Step 161: 96000 + 600 = 96600
Step 162: 96600 + 600 = 97200
Step 163: 97200 + 600 = 97800
Step 164: 97800 + 600 = 98400
Step 165: 98400 + 600 = 99000
Step 166: 99000 + 600 = 99600
Step 167: 99600 + 600 = 100200
Step 168: 100200 + 600 = 100800
Step 169: 100800 + 600 = 101400
Step 170: 101400 + 600 = 102000
Step 171: 102000 + 600 = 102600
Step 172: 102600 + 600 = 103200
Step 173: 103200 + 600 = 103800
Step 174: 103800 + 600 = 104400
Step 175: 104400 + 600 = 105000
Step 176: 105000 + 600 = 105600
Step 177: 105600 + 600 = 106200
Step 178: 106200 + 600 = 106800
Step 179: 106800 + 600 = 107400
Step 180: 107400 + 600 = 108000
Step 181: 108000 + 600 = 108600
Step 182: 108600 + 600 = 109200
Step 183: 109200 + 600 = 109800
Step 184: 109800 + 600 = 110400
Step 185: 110400 + 600 = 111000
Step 186: 111000 + 600 = 111600
Step 187: 111600 + 600 = 112200
Step 188: 112200 + 600 = 112800
Step 189: 112800 + 600 = 113400
Step 190: 113400 + 600 = 114000
Step 191: 114000 + 600 = 114600
Step 192: 114600 + 600 = 115200
Step 193: 115200 + 600 = 115800
Step 194: 115800 + 600 = 116400
Step 195: 116400 + 600 = 117000
Step 196: 117000 + 600 = 117600
Step 197: 117600 + 600 = 118200
Step 198: 118200 + 600 = 118800
Step 199: 118800 + 600 = 119400
Step 200: 119400 + 600 = 120000
Step 201: 120000 + 600 = 120600
Step 202: 120600 + 600 = 121200
Step 203: 121200 + 600 = 121800
Step 204: 121800 + 600 = 122400
Step 205: 122400 + 600 = 123000
Step 206: 123000 + 600 = 123600
Step 207: 123600 + 600 = 124200
Step 208: 124200 + 600 = 124800
Step 209: 124800 + 600 = 125400
Step 210: 125400 + 600 = 126000
Step 211: 126000 + 600 = 126600
Step 212: 126600 + 600 = 127200
Step 213: 127200 + 600 = 127800
Step 214: 127800 + 600 = 128400
Step 215: 128400 + 600 = 129000
Step 216: 129000 + 600 = 129600
Step 217: 129600 + 600 = 130200
Step 218: 130200 + 600 = 130800
Step 219: 130800 + 600 = 131400
Step 220: 131400 + 600 = 132000
Step 221: 132000 + 600 = 132600
Step 222: 132600 + 600 = 133200
Step 223: 133200 + 600 = 133800
Step 224: 133800 + 600 = 134400
Step 225: 134400 + 600 = 135000
Step 226: 135000 + 600 = 135600
Step 227: 135600 + 600 = 136200
Step 228: 136200 + 600 = 136800
Step 229: 136800 + 600 = 137400
Step 230: 137400 + 600 = 138000
Step 231: 138000 + 600 = 138600
Step 232: 138600 + 600 = 139200
Step 233: 139200 + 600 = 139800
Step 234: 139800 + 600 = 140400
Step 235: 140400 + 600 = 141000
Step 236: 141000 + 600 = 141600
Step 237: 141600 + 600 = 142200
Step 238: 142200 + 600 = 142800
Step 239: 142800 + 600 = 143400
Step 240: 143400 + 600 = 144000
Step 241: 144000 + 600 = 144600
Step 242: 144600 + 600 = 145200
Step 243: 145200 + 600 = 145800
Step 244: 145800 + 600 = 146400
Step 245: 146400 + 600 = 147000
Step 246: 147000 + 600 = 147600
Step 247: 147600 + 600 = 148200

So, 600*247 = 148200