The answer is 12345678900987654322. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
6 × 12345678900987654321 = 74074073405925925926
12345678900987654321
12345678900987654321
14
It is 35.
13
9
1
8
Another Answer: 12*0+1 = 1
it equals 62
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 11 - 9,999,999 = - 9,999,978