**1. Cargo.toml:**

```toml
[package]
name = "multiply_params"
version = "0.1.0"
edition = "2021"

[dependencies]
# Add any dependencies your function may require
```

**2. src/lib.rs:**

```rust
pub fn solution(a: i32, b: i32) -> i32 {
    a * b
}
```

**3. Build:**

```bash
cargo build
```

**4. Test:**

```bash
cargo test
```


## Detailed Explanation:

* **Cargo.toml:** This file defines the project metadata, including its name, version, and dependencies. We don't
need any specific dependencies for the `multiply_params` function. You can customize this based on your
requirements.

* **src/lib.rs:**  This file holds our `solution()` function implementation.
    * It takes two integer parameters (`a` and `b`).
    * It uses the multiplication operator `*`.
    * The function returns an integer representing the product of `a` and `b`.

* **Build:** This command builds the project, preparing it for execution.
  * You'll likely need to install Rust (e.g., using `rustup`) if you don't already have it.


* **Test:**  Running this command tests your code to ensure that it functions as intended.

**Additional Notes:**

* This solution is minimal; consider adding more functionality or complex testing in a real-world project.
* The `solution()` function can be extended to handle different data types (e.g., floats, strings) by changing the
input and output types accordingly.



Let me know if you'd like help with any specific aspect of this solution!