Alright, let's solve this math problem step by step. First, we have the number 909. 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 909 and add it to itself 70 times.
Step 1: 0 + 909 = 909
Step 2: 909 + 909 = 1818
Step 3: 1818 + 909 = 2727
Step 4: 2727 + 909 = 3636
Step 5: 3636 + 909 = 4545
Step 6: 4545 + 909 = 5454
Step 7: 5454 + 909 = 6363
Step 8: 6363 + 909 = 7272
Step 9: 7272 + 909 = 8181
Step 10: 8181 + 909 = 9090
Step 11: 9090 + 909 = 9999
Step 12: 9999 + 909 = 10908
Step 13: 10908 + 909 = 11817
Step 14: 11817 + 909 = 12726
Step 15: 12726 + 909 = 13635
Step 16: 13635 + 909 = 14544
Step 17: 14544 + 909 = 15453
Step 18: 15453 + 909 = 16362
Step 19: 16362 + 909 = 17271
Step 20: 17271 + 909 = 18180
Step 21: 18180 + 909 = 19089
Step 22: 19089 + 909 = 19998
Step 23: 19998 + 909 = 20907
Step 24: 20907 + 909 = 21816
Step 25: 21816 + 909 = 22725
Step 26: 22725 + 909 = 23634
Step 27: 23634 + 909 = 24543
Step 28: 24543 + 909 = 25452
Step 29: 25452 + 909 = 26361
Step 30: 26361 + 909 = 27270
Step 31: 27270 + 909 = 28179
Step 32: 28179 + 909 = 29088
Step 33: 29088 + 909 = 29997
Step 34: 29997 + 909 = 30906
Step 35: 30906 + 909 = 31815
Step 36: 31815 + 909 = 32724
Step 37: 32724 + 909 = 33633
Step 38: 33633 + 909 = 34542
Step 39: 34542 + 909 = 35451
Step 40: 35451 + 909 = 36360
Step 41: 36360 + 909 = 37269
Step 42: 37269 + 909 = 38178
Step 43: 38178 + 909 = 39087
Step 44: 39087 + 909 = 39996
Step 45: 39996 + 909 = 40905
Step 46: 40905 + 909 = 41814
Step 47: 41814 + 909 = 42723
Step 48: 42723 + 909 = 43632
Step 49: 43632 + 909 = 44541
Step 50: 44541 + 909 = 45450
Step 51: 45450 + 909 = 46359
Step 52: 46359 + 909 = 47268
Step 53: 47268 + 909 = 48177
Step 54: 48177 + 909 = 49086
Step 55: 49086 + 909 = 49995
Step 56: 49995 + 909 = 50904
Step 57: 50904 + 909 = 51813
Step 58: 51813 + 909 = 52722
Step 59: 52722 + 909 = 53631
Step 60: 53631 + 909 = 54540
Step 61: 54540 + 909 = 55449
Step 62: 55449 + 909 = 56358
Step 63: 56358 + 909 = 57267
Step 64: 57267 + 909 = 58176
Step 65: 58176 + 909 = 59085
Step 66: 59085 + 909 = 59994
Step 67: 59994 + 909 = 60903
Step 68: 60903 + 909 = 61812
Step 69: 61812 + 909 = 62721
Step 70: 62721 + 909 = 63630

So, 909*70 = 63630