7 over 9 as a decimal?

Answer 1

Here is the way to remember some of the decimal representations of 9ths.
1/9 is .11111... repeating. so 2/9 is .22222 where 2 repeats forever
and 3/9 is 1/3 which is .3333 where once again 3 repeats an infinite number of times.. We would usually put a bar over the 3 and write it only once, but the format here does not allow for that.

So the answer to your question is 7/9 if .777... where the 7 repeats forever.

Answer 2

7 over 9 as a decimal is approximately 0.7778.