Let's get this math done. We have 49 and we're going to multiply it by 45. This is the same as taking 49 and adding it to itself 45 times.
Step 1: 0 + 49 = 49
Step 2: 49 + 49 = 98
Step 3: 98 + 49 = 147
Step 4: 147 + 49 = 196
Step 5: 196 + 49 = 245
Step 6: 245 + 49 = 294
Step 7: 294 + 49 = 343
Step 8: 343 + 49 = 392
Step 9: 392 + 49 = 441
Step 10: 441 + 49 = 490
Step 11: 490 + 49 = 539
Step 12: 539 + 49 = 588
Step 13: 588 + 49 = 637
Step 14: 637 + 49 = 686
Step 15: 686 + 49 = 735
Step 16: 735 + 49 = 784
Step 17: 784 + 49 = 833
Step 18: 833 + 49 = 882
Step 19: 882 + 49 = 931
Step 20: 931 + 49 = 980
Step 21: 980 + 49 = 1029
Step 22: 1029 + 49 = 1078
Step 23: 1078 + 49 = 1127
Step 24: 1127 + 49 = 1176
Step 25: 1176 + 49 = 1225
Step 26: 1225 + 49 = 1274
Step 27: 1274 + 49 = 1323
Step 28: 1323 + 49 = 1372
Step 29: 1372 + 49 = 1421
Step 30: 1421 + 49 = 1470
Step 31: 1470 + 49 = 1519
Step 32: 1519 + 49 = 1568
Step 33: 1568 + 49 = 1617
Step 34: 1617 + 49 = 1666
Step 35: 1666 + 49 = 1715
Step 36: 1715 + 49 = 1764
Step 37: 1764 + 49 = 1813
Step 38: 1813 + 49 = 1862
Step 39: 1862 + 49 = 1911
Step 40: 1911 + 49 = 1960
Step 41: 1960 + 49 = 2009
Step 42: 2009 + 49 = 2058
Step 43: 2058 + 49 = 2107
Step 44: 2107 + 49 = 2156
Step 45: 2156 + 49 = 2205

So, 49*45 = 2205