Without delay, let's solve this. We've got 160 and we will be multiplying it by 50, that is, adding 160 to itself 50 times.
Step 1: 0 + 160 = 160
Step 2: 160 + 160 = 320
Step 3: 320 + 160 = 480
Step 4: 480 + 160 = 640
Step 5: 640 + 160 = 800
Step 6: 800 + 160 = 960
Step 7: 960 + 160 = 1120
Step 8: 1120 + 160 = 1280
Step 9: 1280 + 160 = 1440
Step 10: 1440 + 160 = 1600
Step 11: 1600 + 160 = 1760
Step 12: 1760 + 160 = 1920
Step 13: 1920 + 160 = 2080
Step 14: 2080 + 160 = 2240
Step 15: 2240 + 160 = 2400
Step 16: 2400 + 160 = 2560
Step 17: 2560 + 160 = 2720
Step 18: 2720 + 160 = 2880
Step 19: 2880 + 160 = 3040
Step 20: 3040 + 160 = 3200
Step 21: 3200 + 160 = 3360
Step 22: 3360 + 160 = 3520
Step 23: 3520 + 160 = 3680
Step 24: 3680 + 160 = 3840
Step 25: 3840 + 160 = 4000
Step 26: 4000 + 160 = 4160
Step 27: 4160 + 160 = 4320
Step 28: 4320 + 160 = 4480
Step 29: 4480 + 160 = 4640
Step 30: 4640 + 160 = 4800
Step 31: 4800 + 160 = 4960
Step 32: 4960 + 160 = 5120
Step 33: 5120 + 160 = 5280
Step 34: 5280 + 160 = 5440
Step 35: 5440 + 160 = 5600
Step 36: 5600 + 160 = 5760
Step 37: 5760 + 160 = 5920
Step 38: 5920 + 160 = 6080
Step 39: 6080 + 160 = 6240
Step 40: 6240 + 160 = 6400
Step 41: 6400 + 160 = 6560
Step 42: 6560 + 160 = 6720
Step 43: 6720 + 160 = 6880
Step 44: 6880 + 160 = 7040
Step 45: 7040 + 160 = 7200
Step 46: 7200 + 160 = 7360
Step 47: 7360 + 160 = 7520
Step 48: 7520 + 160 = 7680
Step 49: 7680 + 160 = 7840
Step 50: 7840 + 160 = 8000

So, 160*50 = 8000