258×23×9 {41×91÷13(13×10-3)-2}

258×667[3731÷13(127)-2]
172086[3731÷1649]
172086 × 2.26
388914.36

Understanding the Expression
To solve the expression `[258 23×9 {41×91÷13 (13 10-3)-2}]`, we will break it down step-by-step according to the order of operations (PEMDAS/BODMAS).

Step 1: Evaluate Inside the Parentheses
- The first operation is found within the parentheses:
(13 10-3)
This is interpreted as:
13 * 10 - 3 = 130 - 3 = 127.

Step 2: Substitute Back into the Expression
Now, the expression translates to:
`[258 23×9 {41×91÷13 (127)-2}]`

Step 3: Evaluate the Multiplication and Division
- Calculate `41 × 91`:
41 * 91 = 3731.
- Next, divide by 13:
3731 ÷ 13 ≈ 287.7692 (we can round as needed).

Step 4: Continue with the Expression
Now substitute this back:
`[258 23×9 {287.7692 (127)-2}]`
- From here, subtract 2 from 127:
127 - 2 = 125.

Step 5: Simplify Further
Now, the expression is:
`[258 23×9 {287.7692 * 125}]`
- Calculate `287.7692 * 125 ≈ 35971.15`.

Step 6: Complete the Final Calculation
- Now, we have:
`258 23×9 {35971.15}`
- Multiply `23 * 9 = 207`.
- Finally, combine the terms as needed.

Final Result
The complete evaluation may lead to a specific numerical value based on how you interpret the brackets and additional context. This structured approach helps clarify each calculation.