Alright, let's solve this math problem step by step. First, we have the number 278. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 50. So, we're going to take the number 278 and add it to itself 50 times.
Step 1: 0 + 278 = 278
Step 2: 278 + 278 = 556
Step 3: 556 + 278 = 834
Step 4: 834 + 278 = 1112
Step 5: 1112 + 278 = 1390
Step 6: 1390 + 278 = 1668
Step 7: 1668 + 278 = 1946
Step 8: 1946 + 278 = 2224
Step 9: 2224 + 278 = 2502
Step 10: 2502 + 278 = 2780
Step 11: 2780 + 278 = 3058
Step 12: 3058 + 278 = 3336
Step 13: 3336 + 278 = 3614
Step 14: 3614 + 278 = 3892
Step 15: 3892 + 278 = 4170
Step 16: 4170 + 278 = 4448
Step 17: 4448 + 278 = 4726
Step 18: 4726 + 278 = 5004
Step 19: 5004 + 278 = 5282
Step 20: 5282 + 278 = 5560
Step 21: 5560 + 278 = 5838
Step 22: 5838 + 278 = 6116
Step 23: 6116 + 278 = 6394
Step 24: 6394 + 278 = 6672
Step 25: 6672 + 278 = 6950
Step 26: 6950 + 278 = 7228
Step 27: 7228 + 278 = 7506
Step 28: 7506 + 278 = 7784
Step 29: 7784 + 278 = 8062
Step 30: 8062 + 278 = 8340
Step 31: 8340 + 278 = 8618
Step 32: 8618 + 278 = 8896
Step 33: 8896 + 278 = 9174
Step 34: 9174 + 278 = 9452
Step 35: 9452 + 278 = 9730
Step 36: 9730 + 278 = 10008
Step 37: 10008 + 278 = 10286
Step 38: 10286 + 278 = 10564
Step 39: 10564 + 278 = 10842
Step 40: 10842 + 278 = 11120
Step 41: 11120 + 278 = 11398
Step 42: 11398 + 278 = 11676
Step 43: 11676 + 278 = 11954
Step 44: 11954 + 278 = 12232
Step 45: 12232 + 278 = 12510
Step 46: 12510 + 278 = 12788
Step 47: 12788 + 278 = 13066
Step 48: 13066 + 278 = 13344
Step 49: 13344 + 278 = 13622
Step 50: 13622 + 278 = 13900

So, 278*50 = 13900