Alright, let's solve this math problem step by step. First, we have the number 900. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 369. So, we're going to take the number 900 and add it to itself 369 times.
Step 1: 0 + 900 = 900
Step 2: 900 + 900 = 1800
Step 3: 1800 + 900 = 2700
Step 4: 2700 + 900 = 3600
Step 5: 3600 + 900 = 4500
Step 6: 4500 + 900 = 5400
Step 7: 5400 + 900 = 6300
Step 8: 6300 + 900 = 7200
Step 9: 7200 + 900 = 8100
Step 10: 8100 + 900 = 9000
Step 11: 9000 + 900 = 9900
Step 12: 9900 + 900 = 10800
Step 13: 10800 + 900 = 11700
Step 14: 11700 + 900 = 12600
Step 15: 12600 + 900 = 13500
Step 16: 13500 + 900 = 14400
Step 17: 14400 + 900 = 15300
Step 18: 15300 + 900 = 16200
Step 19: 16200 + 900 = 17100
Step 20: 17100 + 900 = 18000
Step 21: 18000 + 900 = 18900
Step 22: 18900 + 900 = 19800
Step 23: 19800 + 900 = 20700
Step 24: 20700 + 900 = 21600
Step 25: 21600 + 900 = 22500
Step 26: 22500 + 900 = 23400
Step 27: 23400 + 900 = 24300
Step 28: 24300 + 900 = 25200
Step 29: 25200 + 900 = 26100
Step 30: 26100 + 900 = 27000
Step 31: 27000 + 900 = 27900
Step 32: 27900 + 900 = 28800
Step 33: 28800 + 900 = 29700
Step 34: 29700 + 900 = 30600
Step 35: 30600 + 900 = 31500
Step 36: 31500 + 900 = 32400
Step 37: 32400 + 900 = 33300
Step 38: 33300 + 900 = 34200
Step 39: 34200 + 900 = 35100
Step 40: 35100 + 900 = 36000
Step 41: 36000 + 900 = 36900
Step 42: 36900 + 900 = 37800
Step 43: 37800 + 900 = 38700
Step 44: 38700 + 900 = 39600
Step 45: 39600 + 900 = 40500
Step 46: 40500 + 900 = 41400
Step 47: 41400 + 900 = 42300
Step 48: 42300 + 900 = 43200
Step 49: 43200 + 900 = 44100
Step 50: 44100 + 900 = 45000
Step 51: 45000 + 900 = 45900
Step 52: 45900 + 900 = 46800
Step 53: 46800 + 900 = 47700
Step 54: 47700 + 900 = 48600
Step 55: 48600 + 900 = 49500
Step 56: 49500 + 900 = 50400
Step 57: 50400 + 900 = 51300
Step 58: 51300 + 900 = 52200
Step 59: 52200 + 900 = 53100
Step 60: 53100 + 900 = 54000
Step 61: 54000 + 900 = 54900
Step 62: 54900 + 900 = 55800
Step 63: 55800 + 900 = 56700
Step 64: 56700 + 900 = 57600
Step 65: 57600 + 900 = 58500
Step 66: 58500 + 900 = 59400
Step 67: 59400 + 900 = 60300
Step 68: 60300 + 900 = 61200
Step 69: 61200 + 900 = 62100
Step 70: 62100 + 900 = 63000
Step 71: 63000 + 900 = 63900
Step 72: 63900 + 900 = 64800
Step 73: 64800 + 900 = 65700
Step 74: 65700 + 900 = 66600
Step 75: 66600 + 900 = 67500
Step 76: 67500 + 900 = 68400
Step 77: 68400 + 900 = 69300
Step 78: 69300 + 900 = 70200
Step 79: 70200 + 900 = 71100
Step 80: 71100 + 900 = 72000
Step 81: 72000 + 900 = 72900
Step 82: 72900 + 900 = 73800
Step 83: 73800 + 900 = 74700
Step 84: 74700 + 900 = 75600
Step 85: 75600 + 900 = 76500
Step 86: 76500 + 900 = 77400
Step 87: 77400 + 900 = 78300
Step 88: 78300 + 900 = 79200
Step 89: 79200 + 900 = 80100
Step 90: 80100 + 900 = 81000
Step 91: 81000 + 900 = 81900
Step 92: 81900 + 900 = 82800
Step 93: 82800 + 900 = 83700
Step 94: 83700 + 900 = 84600
Step 95: 84600 + 900 = 85500
Step 96: 85500 + 900 = 86400
Step 97: 86400 + 900 = 87300
Step 98: 87300 + 900 = 88200
Step 99: 88200 + 900 = 89100
Step 100: 89100 + 900 = 90000
Step 101: 90000 + 900 = 90900
Step 102: 90900 + 900 = 91800
Step 103: 91800 + 900 = 92700
Step 104: 92700 + 900 = 93600
Step 105: 93600 + 900 = 94500
Step 106: 94500 + 900 = 95400
Step 107: 95400 + 900 = 96300
Step 108: 96300 + 900 = 97200
Step 109: 97200 + 900 = 98100
Step 110: 98100 + 900 = 99000
Step 111: 99000 + 900 = 99900
Step 112: 99900 + 900 = 100800
Step 113: 100800 + 900 = 101700
Step 114: 101700 + 900 = 102600
Step 115: 102600 + 900 = 103500
Step 116: 103500 + 900 = 104400
Step 117: 104400 + 900 = 105300
Step 118: 105300 + 900 = 106200
Step 119: 106200 + 900 = 107100
Step 120: 107100 + 900 = 108000
Step 121: 108000 + 900 = 108900
Step 122: 108900 + 900 = 109800
Step 123: 109800 + 900 = 110700
Step 124: 110700 + 900 = 111600
Step 125: 111600 + 900 = 112500
Step 126: 112500 + 900 = 113400
Step 127: 113400 + 900 = 114300
Step 128: 114300 + 900 = 115200
Step 129: 115200 + 900 = 116100
Step 130: 116100 + 900 = 117000
Step 131: 117000 + 900 = 117900
Step 132: 117900 + 900 = 118800
Step 133: 118800 + 900 = 119700
Step 134: 119700 + 900 = 120600
Step 135: 120600 + 900 = 121500
Step 136: 121500 + 900 = 122400
Step 137: 122400 + 900 = 123300
Step 138: 123300 + 900 = 124200
Step 139: 124200 + 900 = 125100
Step 140: 125100 + 900 = 126000
Step 141: 126000 + 900 = 126900
Step 142: 126900 + 900 = 127800
Step 143: 127800 + 900 = 128700
Step 144: 128700 + 900 = 129600
Step 145: 129600 + 900 = 130500
Step 146: 130500 + 900 = 131400
Step 147: 131400 + 900 = 132300
Step 148: 132300 + 900 = 133200
Step 149: 133200 + 900 = 134100
Step 150: 134100 + 900 = 135000
Step 151: 135000 + 900 = 135900
Step 152: 135900 + 900 = 136800
Step 153: 136800 + 900 = 137700
Step 154: 137700 + 900 = 138600
Step 155: 138600 + 900 = 139500
Step 156: 139500 + 900 = 140400
Step 157: 140400 + 900 = 141300
Step 158: 141300 + 900 = 142200
Step 159: 142200 + 900 = 143100
Step 160: 143100 + 900 = 144000
Step 161: 144000 + 900 = 144900
Step 162: 144900 + 900 = 145800
Step 163: 145800 + 900 = 146700
Step 164: 146700 + 900 = 147600
Step 165: 147600 + 900 = 148500
Step 166: 148500 + 900 = 149400
Step 167: 149400 + 900 = 150300
Step 168: 150300 + 900 = 151200
Step 169: 151200 + 900 = 152100
Step 170: 152100 + 900 = 153000
Step 171: 153000 + 900 = 153900
Step 172: 153900 + 900 = 154800
Step 173: 154800 + 900 = 155700
Step 174: 155700 + 900 = 156600
Step 175: 156600 + 900 = 157500
Step 176: 157500 + 900 = 158400
Step 177: 158400 + 900 = 159300
Step 178: 159300 + 900 = 160200
Step 179: 160200 + 900 = 161100
Step 180: 161100 + 900 = 162000
Step 181: 162000 + 900 = 162900
Step 182: 162900 + 900 = 163800
Step 183: 163800 + 900 = 164700
Step 184: 164700 + 900 = 165600
Step 185: 165600 + 900 = 166500
Step 186: 166500 + 900 = 167400
Step 187: 167400 + 900 = 168300
Step 188: 168300 + 900 = 169200
Step 189: 169200 + 900 = 170100
Step 190: 170100 + 900 = 171000
Step 191: 171000 + 900 = 171900
Step 192: 171900 + 900 = 172800
Step 193: 172800 + 900 = 173700
Step 194: 173700 + 900 = 174600
Step 195: 174600 + 900 = 175500
Step 196: 175500 + 900 = 176400
Step 197: 176400 + 900 = 177300
Step 198: 177300 + 900 = 178200
Step 199: 178200 + 900 = 179100
Step 200: 179100 + 900 = 180000
Step 201: 180000 + 900 = 180900
Step 202: 180900 + 900 = 181800
Step 203: 181800 + 900 = 182700
Step 204: 182700 + 900 = 183600
Step 205: 183600 + 900 = 184500
Step 206: 184500 + 900 = 185400
Step 207: 185400 + 900 = 186300
Step 208: 186300 + 900 = 187200
Step 209: 187200 + 900 = 188100
Step 210: 188100 + 900 = 189000
Step 211: 189000 + 900 = 189900
Step 212: 189900 + 900 = 190800
Step 213: 190800 + 900 = 191700
Step 214: 191700 + 900 = 192600
Step 215: 192600 + 900 = 193500
Step 216: 193500 + 900 = 194400
Step 217: 194400 + 900 = 195300
Step 218: 195300 + 900 = 196200
Step 219: 196200 + 900 = 197100
Step 220: 197100 + 900 = 198000
Step 221: 198000 + 900 = 198900
Step 222: 198900 + 900 = 199800
Step 223: 199800 + 900 = 200700
Step 224: 200700 + 900 = 201600
Step 225: 201600 + 900 = 202500
Step 226: 202500 + 900 = 203400
Step 227: 203400 + 900 = 204300
Step 228: 204300 + 900 = 205200
Step 229: 205200 + 900 = 206100
Step 230: 206100 + 900 = 207000
Step 231: 207000 + 900 = 207900
Step 232: 207900 + 900 = 208800
Step 233: 208800 + 900 = 209700
Step 234: 209700 + 900 = 210600
Step 235: 210600 + 900 = 211500
Step 236: 211500 + 900 = 212400
Step 237: 212400 + 900 = 213300
Step 238: 213300 + 900 = 214200
Step 239: 214200 + 900 = 215100
Step 240: 215100 + 900 = 216000
Step 241: 216000 + 900 = 216900
Step 242: 216900 + 900 = 217800
Step 243: 217800 + 900 = 218700
Step 244: 218700 + 900 = 219600
Step 245: 219600 + 900 = 220500
Step 246: 220500 + 900 = 221400
Step 247: 221400 + 900 = 222300
Step 248: 222300 + 900 = 223200
Step 249: 223200 + 900 = 224100
Step 250: 224100 + 900 = 225000
Step 251: 225000 + 900 = 225900
Step 252: 225900 + 900 = 226800
Step 253: 226800 + 900 = 227700
Step 254: 227700 + 900 = 228600
Step 255: 228600 + 900 = 229500
Step 256: 229500 + 900 = 230400
Step 257: 230400 + 900 = 231300
Step 258: 231300 + 900 = 232200
Step 259: 232200 + 900 = 233100
Step 260: 233100 + 900 = 234000
Step 261: 234000 + 900 = 234900
Step 262: 234900 + 900 = 235800
Step 263: 235800 + 900 = 236700
Step 264: 236700 + 900 = 237600
Step 265: 237600 + 900 = 238500
Step 266: 238500 + 900 = 239400
Step 267: 239400 + 900 = 240300
Step 268: 240300 + 900 = 241200
Step 269: 241200 + 900 = 242100
Step 270: 242100 + 900 = 243000
Step 271: 243000 + 900 = 243900
Step 272: 243900 + 900 = 244800
Step 273: 244800 + 900 = 245700
Step 274: 245700 + 900 = 246600
Step 275: 246600 + 900 = 247500
Step 276: 247500 + 900 = 248400
Step 277: 248400 + 900 = 249300
Step 278: 249300 + 900 = 250200
Step 279: 250200 + 900 = 251100
Step 280: 251100 + 900 = 252000
Step 281: 252000 + 900 = 252900
Step 282: 252900 + 900 = 253800
Step 283: 253800 + 900 = 254700
Step 284: 254700 + 900 = 255600
Step 285: 255600 + 900 = 256500
Step 286: 256500 + 900 = 257400
Step 287: 257400 + 900 = 258300
Step 288: 258300 + 900 = 259200
Step 289: 259200 + 900 = 260100
Step 290: 260100 + 900 = 261000
Step 291: 261000 + 900 = 261900
Step 292: 261900 + 900 = 262800
Step 293: 262800 + 900 = 263700
Step 294: 263700 + 900 = 264600
Step 295: 264600 + 900 = 265500
Step 296: 265500 + 900 = 266400
Step 297: 266400 + 900 = 267300
Step 298: 267300 + 900 = 268200
Step 299: 268200 + 900 = 269100
Step 300: 269100 + 900 = 270000
Step 301: 270000 + 900 = 270900
Step 302: 270900 + 900 = 271800
Step 303: 271800 + 900 = 272700
Step 304: 272700 + 900 = 273600
Step 305: 273600 + 900 = 274500
Step 306: 274500 + 900 = 275400
Step 307: 275400 + 900 = 276300
Step 308: 276300 + 900 = 277200
Step 309: 277200 + 900 = 278100
Step 310: 278100 + 900 = 279000
Step 311: 279000 + 900 = 279900
Step 312: 279900 + 900 = 280800
Step 313: 280800 + 900 = 281700
Step 314: 281700 + 900 = 282600
Step 315: 282600 + 900 = 283500
Step 316: 283500 + 900 = 284400
Step 317: 284400 + 900 = 285300
Step 318: 285300 + 900 = 286200
Step 319: 286200 + 900 = 287100
Step 320: 287100 + 900 = 288000
Step 321: 288000 + 900 = 288900
Step 322: 288900 + 900 = 289800
Step 323: 289800 + 900 = 290700
Step 324: 290700 + 900 = 291600
Step 325: 291600 + 900 = 292500
Step 326: 292500 + 900 = 293400
Step 327: 293400 + 900 = 294300
Step 328: 294300 + 900 = 295200
Step 329: 295200 + 900 = 296100
Step 330: 296100 + 900 = 297000
Step 331: 297000 + 900 = 297900
Step 332: 297900 + 900 = 298800
Step 333: 298800 + 900 = 299700
Step 334: 299700 + 900 = 300600
Step 335: 300600 + 900 = 301500
Step 336: 301500 + 900 = 302400
Step 337: 302400 + 900 = 303300
Step 338: 303300 + 900 = 304200
Step 339: 304200 + 900 = 305100
Step 340: 305100 + 900 = 306000
Step 341: 306000 + 900 = 306900
Step 342: 306900 + 900 = 307800
Step 343: 307800 + 900 = 308700
Step 344: 308700 + 900 = 309600
Step 345: 309600 + 900 = 310500
Step 346: 310500 + 900 = 311400
Step 347: 311400 + 900 = 312300
Step 348: 312300 + 900 = 313200
Step 349: 313200 + 900 = 314100
Step 350: 314100 + 900 = 315000
Step 351: 315000 + 900 = 315900
Step 352: 315900 + 900 = 316800
Step 353: 316800 + 900 = 317700
Step 354: 317700 + 900 = 318600
Step 355: 318600 + 900 = 319500
Step 356: 319500 + 900 = 320400
Step 357: 320400 + 900 = 321300
Step 358: 321300 + 900 = 322200
Step 359: 322200 + 900 = 323100
Step 360: 323100 + 900 = 324000
Step 361: 324000 + 900 = 324900
Step 362: 324900 + 900 = 325800
Step 363: 325800 + 900 = 326700
Step 364: 326700 + 900 = 327600
Step 365: 327600 + 900 = 328500
Step 366: 328500 + 900 = 329400
Step 367: 329400 + 900 = 330300
Step 368: 330300 + 900 = 331200
Step 369: 331200 + 900 = 332100

So, 900*369 = 332100