Alright, let's solve this math problem step by step. First, we have the number 545. 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 545 and add it to itself 78 times.
Step 1: 0 + 545 = 545
Step 2: 545 + 545 = 1090
Step 3: 1090 + 545 = 1635
Step 4: 1635 + 545 = 2180
Step 5: 2180 + 545 = 2725
Step 6: 2725 + 545 = 3270
Step 7: 3270 + 545 = 3815
Step 8: 3815 + 545 = 4360
Step 9: 4360 + 545 = 4905
Step 10: 4905 + 545 = 5450
Step 11: 5450 + 545 = 5995
Step 12: 5995 + 545 = 6540
Step 13: 6540 + 545 = 7085
Step 14: 7085 + 545 = 7630
Step 15: 7630 + 545 = 8175
Step 16: 8175 + 545 = 8720
Step 17: 8720 + 545 = 9265
Step 18: 9265 + 545 = 9810
Step 19: 9810 + 545 = 10355
Step 20: 10355 + 545 = 10900
Step 21: 10900 + 545 = 11445
Step 22: 11445 + 545 = 11990
Step 23: 11990 + 545 = 12535
Step 24: 12535 + 545 = 13080
Step 25: 13080 + 545 = 13625
Step 26: 13625 + 545 = 14170
Step 27: 14170 + 545 = 14715
Step 28: 14715 + 545 = 15260
Step 29: 15260 + 545 = 15805
Step 30: 15805 + 545 = 16350
Step 31: 16350 + 545 = 16895
Step 32: 16895 + 545 = 17440
Step 33: 17440 + 545 = 17985
Step 34: 17985 + 545 = 18530
Step 35: 18530 + 545 = 19075
Step 36: 19075 + 545 = 19620
Step 37: 19620 + 545 = 20165
Step 38: 20165 + 545 = 20710
Step 39: 20710 + 545 = 21255
Step 40: 21255 + 545 = 21800
Step 41: 21800 + 545 = 22345
Step 42: 22345 + 545 = 22890
Step 43: 22890 + 545 = 23435
Step 44: 23435 + 545 = 23980
Step 45: 23980 + 545 = 24525
Step 46: 24525 + 545 = 25070
Step 47: 25070 + 545 = 25615
Step 48: 25615 + 545 = 26160
Step 49: 26160 + 545 = 26705
Step 50: 26705 + 545 = 27250
Step 51: 27250 + 545 = 27795
Step 52: 27795 + 545 = 28340
Step 53: 28340 + 545 = 28885
Step 54: 28885 + 545 = 29430
Step 55: 29430 + 545 = 29975
Step 56: 29975 + 545 = 30520
Step 57: 30520 + 545 = 31065
Step 58: 31065 + 545 = 31610
Step 59: 31610 + 545 = 32155
Step 60: 32155 + 545 = 32700
Step 61: 32700 + 545 = 33245
Step 62: 33245 + 545 = 33790
Step 63: 33790 + 545 = 34335
Step 64: 34335 + 545 = 34880
Step 65: 34880 + 545 = 35425
Step 66: 35425 + 545 = 35970
Step 67: 35970 + 545 = 36515
Step 68: 36515 + 545 = 37060
Step 69: 37060 + 545 = 37605
Step 70: 37605 + 545 = 38150
Step 71: 38150 + 545 = 38695
Step 72: 38695 + 545 = 39240
Step 73: 39240 + 545 = 39785
Step 74: 39785 + 545 = 40330
Step 75: 40330 + 545 = 40875
Step 76: 40875 + 545 = 41420
Step 77: 41420 + 545 = 41965
Step 78: 41965 + 545 = 42510

So, 545*78 = 42510