12/99 is the fraction form
For the first one: 8.35, 8.357, 8.36, 8.361
For the second one: 12.013, 12.130, 12.301, 12.310
From least to greatest
The sum of the angles in a heptagon is 900°, so we would add the real numbers that we have here:
121°+139°+125°+126°+158°+120°=789°
x would equal the remaining value:
x=900-789
x=111°
It's become a lot faster and easier to collect research.