111,111,111 x 111,111,111 = 12,345,678,987,654,321
123456787654321
111111111 × 111111111 = 1.234567899×10¹⁶
12345678987654321
It is 12345678987654321.
11111111 + 111111111 = 122222222
111,111,111 x 111,111,111 = 12,345,678,987,654,321
123456787654321
111111111 × 111111111 = 1.234567899×10¹⁶
(111111111)^2 = 1.234567899 x 10^16
12345678987654321
12345678987654321
It is 12345678987654321.
111111111 x 111111111 = 12'345.6789876, "Hope that helps." you can get the square of any number which contain only 1, like: 11 or 11111111 with the thrick below, & of course there would be no need for any kinda calculator. 11*11=121 111*111=12321 1111*1111=1234321 got it ? just count how many times 1 has been repeated in the number, for instance in the last case it's been repeated 4 times. then simply write 1 2 3 4 3 2 1. this cutoff has no limitation in frequency of 1 in the number. & Done.
Yes
12345679
If your asking what the two are timed together its 12345678987654321