Modify message for disabled shipping calculator

In cart-shipping.php, on line 62, there is the following filter:

echo wp_kses_post( apply_filters( 'woocommerce_shipping_not_enabled_on_cart_html', __( 'Shipping costs are calculated during checkout.', 'woocommerce' ) )

I would like to modify the message “Shipping costs are calculated during checkout.” I don’t know how to write the code to add to the functions.php file. If someone can help with this, I would greatly appreciate it.

Thank you
Marina