Without delay, let's solve this. We've got 340 and we will be multiplying it by 51, that is, adding 340 to itself 51 times.
Step 1: 0 + 340 = 340
Step 2: 340 + 340 = 680
Step 3: 680 + 340 = 1020
Step 4: 1020 + 340 = 1360
Step 5: 1360 + 340 = 1700
Step 6: 1700 + 340 = 2040
Step 7: 2040 + 340 = 2380
Step 8: 2380 + 340 = 2720
Step 9: 2720 + 340 = 3060
Step 10: 3060 + 340 = 3400
Step 11: 3400 + 340 = 3740
Step 12: 3740 + 340 = 4080
Step 13: 4080 + 340 = 4420
Step 14: 4420 + 340 = 4760
Step 15: 4760 + 340 = 5100
Step 16: 5100 + 340 = 5440
Step 17: 5440 + 340 = 5780
Step 18: 5780 + 340 = 6120
Step 19: 6120 + 340 = 6460
Step 20: 6460 + 340 = 6800
Step 21: 6800 + 340 = 7140
Step 22: 7140 + 340 = 7480
Step 23: 7480 + 340 = 7820
Step 24: 7820 + 340 = 8160
Step 25: 8160 + 340 = 8500
Step 26: 8500 + 340 = 8840
Step 27: 8840 + 340 = 9180
Step 28: 9180 + 340 = 9520
Step 29: 9520 + 340 = 9860
Step 30: 9860 + 340 = 10200
Step 31: 10200 + 340 = 10540
Step 32: 10540 + 340 = 10880
Step 33: 10880 + 340 = 11220
Step 34: 11220 + 340 = 11560
Step 35: 11560 + 340 = 11900
Step 36: 11900 + 340 = 12240
Step 37: 12240 + 340 = 12580
Step 38: 12580 + 340 = 12920
Step 39: 12920 + 340 = 13260
Step 40: 13260 + 340 = 13600
Step 41: 13600 + 340 = 13940
Step 42: 13940 + 340 = 14280
Step 43: 14280 + 340 = 14620
Step 44: 14620 + 340 = 14960
Step 45: 14960 + 340 = 15300
Step 46: 15300 + 340 = 15640
Step 47: 15640 + 340 = 15980
Step 48: 15980 + 340 = 16320
Step 49: 16320 + 340 = 16660
Step 50: 16660 + 340 = 17000
Step 51: 17000 + 340 = 17340

So, 340*51 = 17340