6.3889
0.0639
1.15 / 18 = 0.0638 recurring (that is, 0.063888..)
It is so very simple and quick to get the answer, especially since you can use the calculator that comes with your computer. But since you are not able to do so, the answer is 6.389, approx.
18 ÷ 115 = 0.156521739
115
16.4286
75 / 115 = 0.65217
28.75
20
38.3333
20
0.713
115
1, 5, 23, 115.
57.5
230 divided by 115 is 2.