One and one ninth.
It is 0.012345679 with the underlined string repeating.
-1/9 x 1/9 = -1/81
Two thousand million Two billion Two times ten to the ninth (2 × 109) (The British and the Americans disagree about what is a billion and a trillion etc.) No one disputes that 2 000 000 000 is "Two times ten to the ninth" Scientific notation is good too: 2,0 E9
0.5
1/81
1 third = 3 ninths, 3 ninths - 2 ninths = 1 ninth.
1/27
1
3
In lowest terms, three and one-ninth divided by one and two-fifths = 20/9 or 22/9
One third is three ninths. So one ninth minus three ninths is minus two nights.
1/3
3/18
It is 2.
one ninth
8/9