25:537-426

To solve the expression \(25:537-426\), we need to clarify the operations involved.

The expression seems to be using the colon (:) for division. Therefore, we can interpret it as:

\[ \frac{25}{537} - 426 \]

First, we calculate \(\frac{25}{537}\):

\[ \frac{25}{537} \approx 0.0465 \quad \text{(rounded to four decimal places)} \]

Next, we subtract \(426\) from that value:

\[ 0.0465 - 426 \approx -425.9535 \]

Thus, the final answer is approximately:

\[ \boxed{-425.9535} \]