OK, let's work through this together. We're starting with 344 and we're going to multiply it by 76, which means we add 344 to itself 76 times.
Step 1: 0 + 344 = 344
Step 2: 344 + 344 = 688
Step 3: 688 + 344 = 1032
Step 4: 1032 + 344 = 1376
Step 5: 1376 + 344 = 1720
Step 6: 1720 + 344 = 2064
Step 7: 2064 + 344 = 2408
Step 8: 2408 + 344 = 2752
Step 9: 2752 + 344 = 3096
Step 10: 3096 + 344 = 3440
Step 11: 3440 + 344 = 3784
Step 12: 3784 + 344 = 4128
Step 13: 4128 + 344 = 4472
Step 14: 4472 + 344 = 4816
Step 15: 4816 + 344 = 5160
Step 16: 5160 + 344 = 5504
Step 17: 5504 + 344 = 5848
Step 18: 5848 + 344 = 6192
Step 19: 6192 + 344 = 6536
Step 20: 6536 + 344 = 6880
Step 21: 6880 + 344 = 7224
Step 22: 7224 + 344 = 7568
Step 23: 7568 + 344 = 7912
Step 24: 7912 + 344 = 8256
Step 25: 8256 + 344 = 8600
Step 26: 8600 + 344 = 8944
Step 27: 8944 + 344 = 9288
Step 28: 9288 + 344 = 9632
Step 29: 9632 + 344 = 9976
Step 30: 9976 + 344 = 10320
Step 31: 10320 + 344 = 10664
Step 32: 10664 + 344 = 11008
Step 33: 11008 + 344 = 11352
Step 34: 11352 + 344 = 11696
Step 35: 11696 + 344 = 12040
Step 36: 12040 + 344 = 12384
Step 37: 12384 + 344 = 12728
Step 38: 12728 + 344 = 13072
Step 39: 13072 + 344 = 13416
Step 40: 13416 + 344 = 13760
Step 41: 13760 + 344 = 14104
Step 42: 14104 + 344 = 14448
Step 43: 14448 + 344 = 14792
Step 44: 14792 + 344 = 15136
Step 45: 15136 + 344 = 15480
Step 46: 15480 + 344 = 15824
Step 47: 15824 + 344 = 16168
Step 48: 16168 + 344 = 16512
Step 49: 16512 + 344 = 16856
Step 50: 16856 + 344 = 17200
Step 51: 17200 + 344 = 17544
Step 52: 17544 + 344 = 17888
Step 53: 17888 + 344 = 18232
Step 54: 18232 + 344 = 18576
Step 55: 18576 + 344 = 18920
Step 56: 18920 + 344 = 19264
Step 57: 19264 + 344 = 19608
Step 58: 19608 + 344 = 19952
Step 59: 19952 + 344 = 20296
Step 60: 20296 + 344 = 20640
Step 61: 20640 + 344 = 20984
Step 62: 20984 + 344 = 21328
Step 63: 21328 + 344 = 21672
Step 64: 21672 + 344 = 22016
Step 65: 22016 + 344 = 22360
Step 66: 22360 + 344 = 22704
Step 67: 22704 + 344 = 23048
Step 68: 23048 + 344 = 23392
Step 69: 23392 + 344 = 23736
Step 70: 23736 + 344 = 24080
Step 71: 24080 + 344 = 24424
Step 72: 24424 + 344 = 24768
Step 73: 24768 + 344 = 25112
Step 74: 25112 + 344 = 25456
Step 75: 25456 + 344 = 25800
Step 76: 25800 + 344 = 26144

So, 344*76 = 26144