Modifying the checkout process in woocommerce / wordpress-plugin

Hello, I have a small shop in wordpress with the woocommerce plugin. On the cart page (see attached image 01, cart page) I would like to simplify the checkout process. RIGHT NOW: - There is a) the "calculate shipping" toggle b) the field "select a country" c) the button "upgrade totals" The user has to: 1. click on the toggle "calculate shipping" 2. select a country from the "country" field 3. press the button "upgrade totals" Then the amount under "Order total" updated. MODIFICATION: - There is a) only a "country" field The user has only to select the country and the amount under "Order total" is AUTOMATICALLY updated. (see attached image 02, checkout page) It should be like on the woocommerce checkout page. There is by default only a "country" field and the amount under "Order total" is automatically updated, if the user selects a country. So: Is it possible to change the woocommerce code to achieve the desired modifikation? And how much would it cost / how many hours would it take? Thanks