How to overwrite dokan commision file code using function.php

Dear Team,

I hope this message finds you well. I am seeking your guidance regarding overriding the commission calculation in Dokan plugin using the function.php file in my WordPress theme.

I need to modify the commission calculation formula by replacing $earning = ( $product_price * $commission_rate ) / 100; with $earning = ( $product_price * $commission_rate ) / 110;.

The relevant code snippet from the Dokan plugin’s file that requires modification is as follows:

if ( 'percentage' === $commission_type ) {
    $earning = ( $product_price * $commission_rate ) / 110;
    $earning = $product_price - $earning;

    // vendor will get 100 percent if commission rate > 100
    if ( $commission_rate > 100 ) {
        $earning = $product_price;
    }
}

As I would like to avoid modifying the plugin directly, I am seeking guidance on how to implement this change through the function.php file in my theme.

I would greatly appreciate it if you could provide the necessary instructions or code snippet to override the calculation logic successfully.

Thank you for your attention and support. I look forward to your prompt response. ??