Alright, let's solve this math problem step by step. First, we have the number 276. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 78. So, we're going to take the number 276 and add it to itself 78 times.
Step 1: 0 + 276 = 276
Step 2: 276 + 276 = 552
Step 3: 552 + 276 = 828
Step 4: 828 + 276 = 1104
Step 5: 1104 + 276 = 1380
Step 6: 1380 + 276 = 1656
Step 7: 1656 + 276 = 1932
Step 8: 1932 + 276 = 2208
Step 9: 2208 + 276 = 2484
Step 10: 2484 + 276 = 2760
Step 11: 2760 + 276 = 3036
Step 12: 3036 + 276 = 3312
Step 13: 3312 + 276 = 3588
Step 14: 3588 + 276 = 3864
Step 15: 3864 + 276 = 4140
Step 16: 4140 + 276 = 4416
Step 17: 4416 + 276 = 4692
Step 18: 4692 + 276 = 4968
Step 19: 4968 + 276 = 5244
Step 20: 5244 + 276 = 5520
Step 21: 5520 + 276 = 5796
Step 22: 5796 + 276 = 6072
Step 23: 6072 + 276 = 6348
Step 24: 6348 + 276 = 6624
Step 25: 6624 + 276 = 6900
Step 26: 6900 + 276 = 7176
Step 27: 7176 + 276 = 7452
Step 28: 7452 + 276 = 7728
Step 29: 7728 + 276 = 8004
Step 30: 8004 + 276 = 8280
Step 31: 8280 + 276 = 8556
Step 32: 8556 + 276 = 8832
Step 33: 8832 + 276 = 9108
Step 34: 9108 + 276 = 9384
Step 35: 9384 + 276 = 9660
Step 36: 9660 + 276 = 9936
Step 37: 9936 + 276 = 10212
Step 38: 10212 + 276 = 10488
Step 39: 10488 + 276 = 10764
Step 40: 10764 + 276 = 11040
Step 41: 11040 + 276 = 11316
Step 42: 11316 + 276 = 11592
Step 43: 11592 + 276 = 11868
Step 44: 11868 + 276 = 12144
Step 45: 12144 + 276 = 12420
Step 46: 12420 + 276 = 12696
Step 47: 12696 + 276 = 12972
Step 48: 12972 + 276 = 13248
Step 49: 13248 + 276 = 13524
Step 50: 13524 + 276 = 13800
Step 51: 13800 + 276 = 14076
Step 52: 14076 + 276 = 14352
Step 53: 14352 + 276 = 14628
Step 54: 14628 + 276 = 14904
Step 55: 14904 + 276 = 15180
Step 56: 15180 + 276 = 15456
Step 57: 15456 + 276 = 15732
Step 58: 15732 + 276 = 16008
Step 59: 16008 + 276 = 16284
Step 60: 16284 + 276 = 16560
Step 61: 16560 + 276 = 16836
Step 62: 16836 + 276 = 17112
Step 63: 17112 + 276 = 17388
Step 64: 17388 + 276 = 17664
Step 65: 17664 + 276 = 17940
Step 66: 17940 + 276 = 18216
Step 67: 18216 + 276 = 18492
Step 68: 18492 + 276 = 18768
Step 69: 18768 + 276 = 19044
Step 70: 19044 + 276 = 19320
Step 71: 19320 + 276 = 19596
Step 72: 19596 + 276 = 19872
Step 73: 19872 + 276 = 20148
Step 74: 20148 + 276 = 20424
Step 75: 20424 + 276 = 20700
Step 76: 20700 + 276 = 20976
Step 77: 20976 + 276 = 21252
Step 78: 21252 + 276 = 21528

So, 276*78 = 21528