2025:15×(524+195):9+(308308-207207)×2

To solve the expression:

2025:15×(524+195):9+(308308-207207)×2

Let's break it down step by step:

Step 1: Simplify the innermost parentheses:

(524 + 195) = 719

Substitute this value into the expression:

2025:15 × 719:9 + (308308 - 207207) × 2

Step 2: Simplify the divisions:

2025 ÷ 15 = 135 719 ÷ 9 = 79.88889 (rounded to 5 decimal places)

Substitute these values into the expression:

135 × 79.88889 + (308308 - 207207) × 2

Step 3: Simplify the addition and subtraction:

308308 - 207207 = 101101

Substitute this value into the expression:

135 × 79.88889 + 101101 × 2

Step 4: Simplify the multiplications:

135 × 79.88889 = 10786.666

101101 × 2 = 202202

Substitute these values into the expression:

10786.666 + 202202

Step 5: Simplify the addition:

10786.666 + 202202 = 213988.666

Therefore, the solution to the expression 2025:15×(524+195):9+(308308-207207)×2 is approximately 213988.666.