Let's break this down step by step:

Calculate the innermost division operation: (20:7) = 2.857Next division operation: (2.857/5) = 0.5714Next division operation: (0.5714/13) = 0.0439Next division operation: (0.0439/9) = 0.0049Next division operation: (0.0049/1) = 0.0049Next division operation: (0.0049/6) = 0.00081667Calculate the multiplication and subtraction operations:

14 - 6 * 0.00081667 = 13.9888

Calculate the remaining operations:

5 * 4 + 0,24

5 * 4 = 20
20 + 0,24 = 0,44

Therefore, the final result of the expression is 13.9888.