Alright, let's solve this math problem step by step. First, we have the number 823. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 70. So, we're going to take the number 823 and add it to itself 70 times.
Step 1: 0 + 823 = 823
Step 2: 823 + 823 = 1646
Step 3: 1646 + 823 = 2469
Step 4: 2469 + 823 = 3292
Step 5: 3292 + 823 = 4115
Step 6: 4115 + 823 = 4938
Step 7: 4938 + 823 = 5761
Step 8: 5761 + 823 = 6584
Step 9: 6584 + 823 = 7407
Step 10: 7407 + 823 = 8230
Step 11: 8230 + 823 = 9053
Step 12: 9053 + 823 = 9876
Step 13: 9876 + 823 = 10699
Step 14: 10699 + 823 = 11522
Step 15: 11522 + 823 = 12345
Step 16: 12345 + 823 = 13168
Step 17: 13168 + 823 = 13991
Step 18: 13991 + 823 = 14814
Step 19: 14814 + 823 = 15637
Step 20: 15637 + 823 = 16460
Step 21: 16460 + 823 = 17283
Step 22: 17283 + 823 = 18106
Step 23: 18106 + 823 = 18929
Step 24: 18929 + 823 = 19752
Step 25: 19752 + 823 = 20575
Step 26: 20575 + 823 = 21398
Step 27: 21398 + 823 = 22221
Step 28: 22221 + 823 = 23044
Step 29: 23044 + 823 = 23867
Step 30: 23867 + 823 = 24690
Step 31: 24690 + 823 = 25513
Step 32: 25513 + 823 = 26336
Step 33: 26336 + 823 = 27159
Step 34: 27159 + 823 = 27982
Step 35: 27982 + 823 = 28805
Step 36: 28805 + 823 = 29628
Step 37: 29628 + 823 = 30451
Step 38: 30451 + 823 = 31274
Step 39: 31274 + 823 = 32097
Step 40: 32097 + 823 = 32920
Step 41: 32920 + 823 = 33743
Step 42: 33743 + 823 = 34566
Step 43: 34566 + 823 = 35389
Step 44: 35389 + 823 = 36212
Step 45: 36212 + 823 = 37035
Step 46: 37035 + 823 = 37858
Step 47: 37858 + 823 = 38681
Step 48: 38681 + 823 = 39504
Step 49: 39504 + 823 = 40327
Step 50: 40327 + 823 = 41150
Step 51: 41150 + 823 = 41973
Step 52: 41973 + 823 = 42796
Step 53: 42796 + 823 = 43619
Step 54: 43619 + 823 = 44442
Step 55: 44442 + 823 = 45265
Step 56: 45265 + 823 = 46088
Step 57: 46088 + 823 = 46911
Step 58: 46911 + 823 = 47734
Step 59: 47734 + 823 = 48557
Step 60: 48557 + 823 = 49380
Step 61: 49380 + 823 = 50203
Step 62: 50203 + 823 = 51026
Step 63: 51026 + 823 = 51849
Step 64: 51849 + 823 = 52672
Step 65: 52672 + 823 = 53495
Step 66: 53495 + 823 = 54318
Step 67: 54318 + 823 = 55141
Step 68: 55141 + 823 = 55964
Step 69: 55964 + 823 = 56787
Step 70: 56787 + 823 = 57610

So, 823*70 = 57610