Alright, let's solve this math problem step by step. First, we have the number 198. 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 198 and add it to itself 80 times.
Step 1: 0 + 198 = 198
Step 2: 198 + 198 = 396
Step 3: 396 + 198 = 594
Step 4: 594 + 198 = 792
Step 5: 792 + 198 = 990
Step 6: 990 + 198 = 1188
Step 7: 1188 + 198 = 1386
Step 8: 1386 + 198 = 1584
Step 9: 1584 + 198 = 1782
Step 10: 1782 + 198 = 1980
Step 11: 1980 + 198 = 2178
Step 12: 2178 + 198 = 2376
Step 13: 2376 + 198 = 2574
Step 14: 2574 + 198 = 2772
Step 15: 2772 + 198 = 2970
Step 16: 2970 + 198 = 3168
Step 17: 3168 + 198 = 3366
Step 18: 3366 + 198 = 3564
Step 19: 3564 + 198 = 3762
Step 20: 3762 + 198 = 3960
Step 21: 3960 + 198 = 4158
Step 22: 4158 + 198 = 4356
Step 23: 4356 + 198 = 4554
Step 24: 4554 + 198 = 4752
Step 25: 4752 + 198 = 4950
Step 26: 4950 + 198 = 5148
Step 27: 5148 + 198 = 5346
Step 28: 5346 + 198 = 5544
Step 29: 5544 + 198 = 5742
Step 30: 5742 + 198 = 5940
Step 31: 5940 + 198 = 6138
Step 32: 6138 + 198 = 6336
Step 33: 6336 + 198 = 6534
Step 34: 6534 + 198 = 6732
Step 35: 6732 + 198 = 6930
Step 36: 6930 + 198 = 7128
Step 37: 7128 + 198 = 7326
Step 38: 7326 + 198 = 7524
Step 39: 7524 + 198 = 7722
Step 40: 7722 + 198 = 7920
Step 41: 7920 + 198 = 8118
Step 42: 8118 + 198 = 8316
Step 43: 8316 + 198 = 8514
Step 44: 8514 + 198 = 8712
Step 45: 8712 + 198 = 8910
Step 46: 8910 + 198 = 9108
Step 47: 9108 + 198 = 9306
Step 48: 9306 + 198 = 9504
Step 49: 9504 + 198 = 9702
Step 50: 9702 + 198 = 9900
Step 51: 9900 + 198 = 10098
Step 52: 10098 + 198 = 10296
Step 53: 10296 + 198 = 10494
Step 54: 10494 + 198 = 10692
Step 55: 10692 + 198 = 10890
Step 56: 10890 + 198 = 11088
Step 57: 11088 + 198 = 11286
Step 58: 11286 + 198 = 11484
Step 59: 11484 + 198 = 11682
Step 60: 11682 + 198 = 11880
Step 61: 11880 + 198 = 12078
Step 62: 12078 + 198 = 12276
Step 63: 12276 + 198 = 12474
Step 64: 12474 + 198 = 12672
Step 65: 12672 + 198 = 12870
Step 66: 12870 + 198 = 13068
Step 67: 13068 + 198 = 13266
Step 68: 13266 + 198 = 13464
Step 69: 13464 + 198 = 13662
Step 70: 13662 + 198 = 13860
Step 71: 13860 + 198 = 14058
Step 72: 14058 + 198 = 14256
Step 73: 14256 + 198 = 14454
Step 74: 14454 + 198 = 14652
Step 75: 14652 + 198 = 14850
Step 76: 14850 + 198 = 15048
Step 77: 15048 + 198 = 15246
Step 78: 15246 + 198 = 15444
Step 79: 15444 + 198 = 15642
Step 80: 15642 + 198 = 15840

So, 198*80 = 15840