OK, let's work through this together. We're starting with 49 and we're going to multiply it by 35, which means we add 49 to itself 35 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

So, 49*35 = 1715