Read and analyze the problem.

To solve the problem, we need to divide the total amount of land (65.1 acres) into 3 equal sections.

### Step 1: Choose the appropriate operation.
The appropriate operation here is division since we want to divide the total acres of land by the number of sections.

### Step 2: Solve the problem.
We will divide 65.1 acres by 3.

\[
\frac{65.1}{3} = 21.7
\]

Thus, each section will contain **21.7 acres**.

### Step 3: Estimate to check the solution.
To estimate, we can round 65.1 to 65. Dividing 65 by 3 gives us approximately 21.67, which rounds to 22.

Since our exact answer is 21.7, the estimated value of around 22 acres serves as a good check; our exact solution is reasonable.

### Final Answer:
Each section will have **21.7 acres**.