Alright, let's solve this math problem step by step. First, we have the number 108. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 80. So, we're going to take the number 108 and add it to itself 80 times.
Step 1: 0 + 108 = 108
Step 2: 108 + 108 = 216
Step 3: 216 + 108 = 324
Step 4: 324 + 108 = 432
Step 5: 432 + 108 = 540
Step 6: 540 + 108 = 648
Step 7: 648 + 108 = 756
Step 8: 756 + 108 = 864
Step 9: 864 + 108 = 972
Step 10: 972 + 108 = 1080
Step 11: 1080 + 108 = 1188
Step 12: 1188 + 108 = 1296
Step 13: 1296 + 108 = 1404
Step 14: 1404 + 108 = 1512
Step 15: 1512 + 108 = 1620
Step 16: 1620 + 108 = 1728
Step 17: 1728 + 108 = 1836
Step 18: 1836 + 108 = 1944
Step 19: 1944 + 108 = 2052
Step 20: 2052 + 108 = 2160
Step 21: 2160 + 108 = 2268
Step 22: 2268 + 108 = 2376
Step 23: 2376 + 108 = 2484
Step 24: 2484 + 108 = 2592
Step 25: 2592 + 108 = 2700
Step 26: 2700 + 108 = 2808
Step 27: 2808 + 108 = 2916
Step 28: 2916 + 108 = 3024
Step 29: 3024 + 108 = 3132
Step 30: 3132 + 108 = 3240
Step 31: 3240 + 108 = 3348
Step 32: 3348 + 108 = 3456
Step 33: 3456 + 108 = 3564
Step 34: 3564 + 108 = 3672
Step 35: 3672 + 108 = 3780
Step 36: 3780 + 108 = 3888
Step 37: 3888 + 108 = 3996
Step 38: 3996 + 108 = 4104
Step 39: 4104 + 108 = 4212
Step 40: 4212 + 108 = 4320
Step 41: 4320 + 108 = 4428
Step 42: 4428 + 108 = 4536
Step 43: 4536 + 108 = 4644
Step 44: 4644 + 108 = 4752
Step 45: 4752 + 108 = 4860
Step 46: 4860 + 108 = 4968
Step 47: 4968 + 108 = 5076
Step 48: 5076 + 108 = 5184
Step 49: 5184 + 108 = 5292
Step 50: 5292 + 108 = 5400
Step 51: 5400 + 108 = 5508
Step 52: 5508 + 108 = 5616
Step 53: 5616 + 108 = 5724
Step 54: 5724 + 108 = 5832
Step 55: 5832 + 108 = 5940
Step 56: 5940 + 108 = 6048
Step 57: 6048 + 108 = 6156
Step 58: 6156 + 108 = 6264
Step 59: 6264 + 108 = 6372
Step 60: 6372 + 108 = 6480
Step 61: 6480 + 108 = 6588
Step 62: 6588 + 108 = 6696
Step 63: 6696 + 108 = 6804
Step 64: 6804 + 108 = 6912
Step 65: 6912 + 108 = 7020
Step 66: 7020 + 108 = 7128
Step 67: 7128 + 108 = 7236
Step 68: 7236 + 108 = 7344
Step 69: 7344 + 108 = 7452
Step 70: 7452 + 108 = 7560
Step 71: 7560 + 108 = 7668
Step 72: 7668 + 108 = 7776
Step 73: 7776 + 108 = 7884
Step 74: 7884 + 108 = 7992
Step 75: 7992 + 108 = 8100
Step 76: 8100 + 108 = 8208
Step 77: 8208 + 108 = 8316
Step 78: 8316 + 108 = 8424
Step 79: 8424 + 108 = 8532
Step 80: 8532 + 108 = 8640

So, 108*80 = 8640