You need to follow PEMDAS, which tells you what to do first.
1. Parenthesis
2. Exponents
3. Multiplication and Division (do whichever comes first from left to right)
4. Addition and Subtraction (do whichever comes first from left to right)
Following that, we get this.
689 * 56 = 38584
38584 / 2 = 19292
5906 + 19292 - 3 = 25195
Hope that helped! If it did don't forget to mark Brainliest, 5 star, and thanks :)
