Cdtdet

3 x 37 = 111
 
6 x 37 = 222
 
9 x 37 = 333
 
12 x 37 = 444
 
15 x 37 = 555
 
18 x 37 = 666
 
21 x 37 = 777
 
24 x 37 = 888
27 x 37 = 999
 ..................................................
12345679x09=111111111 12345679x18=222222222 12345679x27=333333333 12345679x36=444444444 12345679x45=555555555 12345679x54=666666666 12345679x63=777777777 12345679x72=888888888 12345679x81=999999999
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1 x 9 + 2 = 11
 
12 x 9 + 3 = 111
 
123 x 9 + 4 = 1111
 
1234 x 9 + 5 = 11111
 
12345 x 9 + 6 = 111111
 
123456 x 9 + 7 = 1111111
 
1234567 x 9 + 8 = 11111111
12345678 x 9 + 9 = 111111111
  .................................................................
 
1 x 8 + 1 = 9
 
12 x 8 + 2 = 98
 
123 x 8 + 3 = 987
 
1234 x 8 + 4 = 9876
 
12345 x 8 + 5 = 98765
 
123456 x 8 + 6 = 987654
 
1234567 x 8 + 7 = 9876543
 
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321
 .............................................................................

 
0 x 9 + 8 = 8
 
9 x 9 + 7 = 88
 
98 x 9 + 6 = 888
 
987 x 9 + 5 = 8888
 
9876 x 9 + 4 = 88888
 
98765 x 9 + 3 = 888888
 
987654 x 9 + 2 = 8888888
 
9876543 x 9 + 1 = 88888888
 
98765432 x 9 + 0 = 888888888
 
987654321 x 9 - 1 = 8888888888
9876543210 x 9 - 2 = 88888888888
 ......................................................................  
987654321 x 09 = 08 888 888 889 987654321 x 18 = 17 777 777 778 987654321 x 27 = 26 666 666 667 987654321 x 36 = 35 555 555 556 987654321 x 45 = 44 444 444 445 987654321 x 54 = 53 333 333 334 987654321 x 63 = 62 222 222 223 987654321 x 72 = 71 111 111 112 987654321 x 81 = 80 000 000 001 ........................................................................
 

1 x 1 = 1
 
11 x 11 = 121
 
111 x 111 = 12321
 
1111 x 1111 = 1234321
 
11111 x 11111 = 123454321
 
111111 x 111111 = 12345654321
 
1111111 x 1111111 = 1234567654321
 
11111111 x 11111111 = 123456787654321
 
111111111 x 111111111 = 12345678987654321
111.111.111 x 111.111.111 = 12.345.678.987.654.321