111111111 × 111111111 = 1.234567899×10¹⁶
12345678987654321
12345678987654321
It is 12345678987654321.
Yes
11111111 + 111111111 = 122222222
12345679
If your asking what the two are timed together its 12345678987654321
111,111,111 x 111,111,111 = 12,345,678,987,654,321
111,111,111 plus 111,111,111 = 222,222,222
111111111
0.111111111 = 111111111/1000000000 If the 1 recurs, then: 0.111... = 1/9