Question

5. 1 x 1 = 1
11 ~ 11 = 121
111 x 111 = 12321
1111 * 1111 = 1234321
= 123454321
$1 \times 1 = 1 \\ 11 \times 11 = 121 \\ 111 \times 111 = 12321 \\ 1111 \times 1111 = 1234321 \\ 11111 \times 11111 = 123454321 \\ 111111 \times 111111 = =$
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Answer 1

111111times111111= 12345654321