Tính

----- Nội dung ảnh -----
Bài 15. Tính:

\[
D = \frac{24.47 - 23}{\frac{3}{7} + \frac{3}{11} + \frac{3}{1001} + \frac{3}{13}}
\]

\[
A = \left( \frac{0.4 - \frac{2}{9} + \frac{2}{11} + \frac{1}{3} - 0.25 + \frac{1}{5}}{\frac{7}{9} - \frac{7}{11}} \right) \text{ 2021 }
\]

\[
\text{ 2022 }
\]