Let's get this math done. We have 324 and we're going to multiply it by 78. This is the same as taking 324 and adding it to itself 78 times.
Step 1: 0 + 324 = 324
Step 2: 324 + 324 = 648
Step 3: 648 + 324 = 972
Step 4: 972 + 324 = 1296
Step 5: 1296 + 324 = 1620
Step 6: 1620 + 324 = 1944
Step 7: 1944 + 324 = 2268
Step 8: 2268 + 324 = 2592
Step 9: 2592 + 324 = 2916
Step 10: 2916 + 324 = 3240
Step 11: 3240 + 324 = 3564
Step 12: 3564 + 324 = 3888
Step 13: 3888 + 324 = 4212
Step 14: 4212 + 324 = 4536
Step 15: 4536 + 324 = 4860
Step 16: 4860 + 324 = 5184
Step 17: 5184 + 324 = 5508
Step 18: 5508 + 324 = 5832
Step 19: 5832 + 324 = 6156
Step 20: 6156 + 324 = 6480
Step 21: 6480 + 324 = 6804
Step 22: 6804 + 324 = 7128
Step 23: 7128 + 324 = 7452
Step 24: 7452 + 324 = 7776
Step 25: 7776 + 324 = 8100
Step 26: 8100 + 324 = 8424
Step 27: 8424 + 324 = 8748
Step 28: 8748 + 324 = 9072
Step 29: 9072 + 324 = 9396
Step 30: 9396 + 324 = 9720
Step 31: 9720 + 324 = 10044
Step 32: 10044 + 324 = 10368
Step 33: 10368 + 324 = 10692
Step 34: 10692 + 324 = 11016
Step 35: 11016 + 324 = 11340
Step 36: 11340 + 324 = 11664
Step 37: 11664 + 324 = 11988
Step 38: 11988 + 324 = 12312
Step 39: 12312 + 324 = 12636
Step 40: 12636 + 324 = 12960
Step 41: 12960 + 324 = 13284
Step 42: 13284 + 324 = 13608
Step 43: 13608 + 324 = 13932
Step 44: 13932 + 324 = 14256
Step 45: 14256 + 324 = 14580
Step 46: 14580 + 324 = 14904
Step 47: 14904 + 324 = 15228
Step 48: 15228 + 324 = 15552
Step 49: 15552 + 324 = 15876
Step 50: 15876 + 324 = 16200
Step 51: 16200 + 324 = 16524
Step 52: 16524 + 324 = 16848
Step 53: 16848 + 324 = 17172
Step 54: 17172 + 324 = 17496
Step 55: 17496 + 324 = 17820
Step 56: 17820 + 324 = 18144
Step 57: 18144 + 324 = 18468
Step 58: 18468 + 324 = 18792
Step 59: 18792 + 324 = 19116
Step 60: 19116 + 324 = 19440
Step 61: 19440 + 324 = 19764
Step 62: 19764 + 324 = 20088
Step 63: 20088 + 324 = 20412
Step 64: 20412 + 324 = 20736
Step 65: 20736 + 324 = 21060
Step 66: 21060 + 324 = 21384
Step 67: 21384 + 324 = 21708
Step 68: 21708 + 324 = 22032
Step 69: 22032 + 324 = 22356
Step 70: 22356 + 324 = 22680
Step 71: 22680 + 324 = 23004
Step 72: 23004 + 324 = 23328
Step 73: 23328 + 324 = 23652
Step 74: 23652 + 324 = 23976
Step 75: 23976 + 324 = 24300
Step 76: 24300 + 324 = 24624
Step 77: 24624 + 324 = 24948
Step 78: 24948 + 324 = 25272

So, 324*78 = 25272