Display shipping cost next to the Flat Rate which is set to be Free

Display shipping cost next to the Flat Rate which is set to be Free

/** 
* Open `\wp-content\plugins\woocommerce\includes\wc-cart-functions.php`
* Search for `wc_cart_totals_shipping_method_label function`
* Replace it with the following function
**/

function wc_cart_totals_shipping_method_label( $method ) {
    $label = $method->get_label();

    if ( $method->cost >= 0 ) {
        if ( WC()->cart->tax_display_cart == 'excl' ) {
            $label .= ': ' . wc_price( $method->cost );
            if ( $method->get_shipping_tax() > 0 && WC()->cart->prices_include_tax ) {
                $label .= ' <small class="tax_label">' . WC()->countries->ex_tax_or_vat() . '</small>';
            }
        } else {
            $label .= ': ' . wc_price( $method->cost + $method->get_shipping_tax() );
            if ( $method->get_shipping_tax() > 0 && ! WC()->cart->prices_include_tax ) {
                $label .= ' <small class="tax_label">' . WC()->countries->inc_tax_or_vat() . '</small>';
            }
        }
    }

    return apply_filters( 'woocommerce_cart_shipping_method_full_label', $label, $method );
}