Let's roll up our sleeves and solve this. We have 108 and we're going to multiply it by 98, essentially adding 108 to itself 98 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
Step 81: 8640 + 108 = 8748
Step 82: 8748 + 108 = 8856
Step 83: 8856 + 108 = 8964
Step 84: 8964 + 108 = 9072
Step 85: 9072 + 108 = 9180
Step 86: 9180 + 108 = 9288
Step 87: 9288 + 108 = 9396
Step 88: 9396 + 108 = 9504
Step 89: 9504 + 108 = 9612
Step 90: 9612 + 108 = 9720
Step 91: 9720 + 108 = 9828
Step 92: 9828 + 108 = 9936
Step 93: 9936 + 108 = 10044
Step 94: 10044 + 108 = 10152
Step 95: 10152 + 108 = 10260
Step 96: 10260 + 108 = 10368
Step 97: 10368 + 108 = 10476
Step 98: 10476 + 108 = 10584

So, 108*98 = 10584