9 x 111 = 999 To simplify the sum, think of it as making 99. 9 x 11 = 99 Then multiply the answer (99) and 11 by ten. That is your answer
999 + 99 = 1098
The LCM of 99 and 999 is 10989
99 999 999 980 000 000 001
1.0 × 10^56
999 trillion plus 99 million is 999,000,099,000,000
nothing
The answer is 6.99574217 × 1013
95963541399
999+(99/99)
99
99 of them with a remainder of 9