111111111
0.111111111 = 111111111/1000000000 If the 1 recurs, then: 0.111... = 1/9
0.1111
1, 3, 9, 37, 111, 333, 333667, 1001001, 3003003, 12345679, 37037037, 111111111
111111111 × 111111111 = 1.234567899×10¹⁶
111111111
0.1111
63131.3131
111111111
0.111111111 = 111111111/1000000000 If the 1 recurs, then: 0.111... = 1/9
0.1111
1, 3, 9, 37, 111, 333, 333667, 1001001, 3003003, 12345679, 37037037, 111111111
111111111 × 111111111 = 1.234567899×10¹⁶
12345678987654321
12345678987654321
It is 12345678987654321.
Yes