OK, let's work through this together. We're starting with 759 and we're going to multiply it by 25, which means we add 759 to itself 25 times.
Step 1: 0 + 759 = 759
Step 2: 759 + 759 = 1518
Step 3: 1518 + 759 = 2277
Step 4: 2277 + 759 = 3036
Step 5: 3036 + 759 = 3795
Step 6: 3795 + 759 = 4554
Step 7: 4554 + 759 = 5313
Step 8: 5313 + 759 = 6072
Step 9: 6072 + 759 = 6831
Step 10: 6831 + 759 = 7590
Step 11: 7590 + 759 = 8349
Step 12: 8349 + 759 = 9108
Step 13: 9108 + 759 = 9867
Step 14: 9867 + 759 = 10626
Step 15: 10626 + 759 = 11385
Step 16: 11385 + 759 = 12144
Step 17: 12144 + 759 = 12903
Step 18: 12903 + 759 = 13662
Step 19: 13662 + 759 = 14421
Step 20: 14421 + 759 = 15180
Step 21: 15180 + 759 = 15939
Step 22: 15939 + 759 = 16698
Step 23: 16698 + 759 = 17457
Step 24: 17457 + 759 = 18216
Step 25: 18216 + 759 = 18975

So, 759*25 = 18975