2,305:(11/15-0.125)

First, calculate the value inside the parenthesis:

(11/15 - 0.125) = (0.733 - 0.125) = 0.608

Now, divide 2,305 by 0.608:

2,305 / 0.608 ≈ 3,785.19

Therefore, 2,305:(11/15-0.125) is approximately 3,785.19