First, simplify the expressions within the parentheses:
5/18 - 4/15 = 25/90 - 24/90 = 1/90
1/6 + 14/15 = 5/30 + 28/30 = 33/30 = 11/10
Now, let's take care of the division:
(1/90) / (1/6 + 11/10) = (1/90) / (11/10 + 6/10) = (1/90) / (17/10) = (1/90) * (10/17) = 10/153
Finally, add 3 and 0.8 to get:
10/153 + 3 + 0.8 = 3 + 0.8 + 10/153 = 3.8 + 10/153 = 460/153 + 10/153 = 470/153
Therefore, the final answer is 470/153.
First, simplify the expressions within the parentheses:
5/18 - 4/15 = 25/90 - 24/90 = 1/90
1/6 + 14/15 = 5/30 + 28/30 = 33/30 = 11/10
Now, let's take care of the division:
(1/90) / (1/6 + 11/10) = (1/90) / (11/10 + 6/10) = (1/90) / (17/10) = (1/90) * (10/17) = 10/153
Finally, add 3 and 0.8 to get:
10/153 + 3 + 0.8 = 3 + 0.8 + 10/153 = 3.8 + 10/153 = 460/153 + 10/153 = 470/153
Therefore, the final answer is 470/153.