Let's roll up our sleeves and solve this. We have 294 and we're going to multiply it by 70, essentially adding 294 to itself 70 times.
Step 1: 0 + 294 = 294
Step 2: 294 + 294 = 588
Step 3: 588 + 294 = 882
Step 4: 882 + 294 = 1176
Step 5: 1176 + 294 = 1470
Step 6: 1470 + 294 = 1764
Step 7: 1764 + 294 = 2058
Step 8: 2058 + 294 = 2352
Step 9: 2352 + 294 = 2646
Step 10: 2646 + 294 = 2940
Step 11: 2940 + 294 = 3234
Step 12: 3234 + 294 = 3528
Step 13: 3528 + 294 = 3822
Step 14: 3822 + 294 = 4116
Step 15: 4116 + 294 = 4410
Step 16: 4410 + 294 = 4704
Step 17: 4704 + 294 = 4998
Step 18: 4998 + 294 = 5292
Step 19: 5292 + 294 = 5586
Step 20: 5586 + 294 = 5880
Step 21: 5880 + 294 = 6174
Step 22: 6174 + 294 = 6468
Step 23: 6468 + 294 = 6762
Step 24: 6762 + 294 = 7056
Step 25: 7056 + 294 = 7350
Step 26: 7350 + 294 = 7644
Step 27: 7644 + 294 = 7938
Step 28: 7938 + 294 = 8232
Step 29: 8232 + 294 = 8526
Step 30: 8526 + 294 = 8820
Step 31: 8820 + 294 = 9114
Step 32: 9114 + 294 = 9408
Step 33: 9408 + 294 = 9702
Step 34: 9702 + 294 = 9996
Step 35: 9996 + 294 = 10290
Step 36: 10290 + 294 = 10584
Step 37: 10584 + 294 = 10878
Step 38: 10878 + 294 = 11172
Step 39: 11172 + 294 = 11466
Step 40: 11466 + 294 = 11760
Step 41: 11760 + 294 = 12054
Step 42: 12054 + 294 = 12348
Step 43: 12348 + 294 = 12642
Step 44: 12642 + 294 = 12936
Step 45: 12936 + 294 = 13230
Step 46: 13230 + 294 = 13524
Step 47: 13524 + 294 = 13818
Step 48: 13818 + 294 = 14112
Step 49: 14112 + 294 = 14406
Step 50: 14406 + 294 = 14700
Step 51: 14700 + 294 = 14994
Step 52: 14994 + 294 = 15288
Step 53: 15288 + 294 = 15582
Step 54: 15582 + 294 = 15876
Step 55: 15876 + 294 = 16170
Step 56: 16170 + 294 = 16464
Step 57: 16464 + 294 = 16758
Step 58: 16758 + 294 = 17052
Step 59: 17052 + 294 = 17346
Step 60: 17346 + 294 = 17640
Step 61: 17640 + 294 = 17934
Step 62: 17934 + 294 = 18228
Step 63: 18228 + 294 = 18522
Step 64: 18522 + 294 = 18816
Step 65: 18816 + 294 = 19110
Step 66: 19110 + 294 = 19404
Step 67: 19404 + 294 = 19698
Step 68: 19698 + 294 = 19992
Step 69: 19992 + 294 = 20286
Step 70: 20286 + 294 = 20580

So, 294*70 = 20580