shipping charge calculated by total amout

Hi, admin
for example, If the total amount of buying exceeds $360, free charge,
otherwise, shipping fee are $80. the fee is fixed.
thanks a lot <img src='https://asprunner.com/forums/file.php?topicimage=1&fieldname=question&id=9094&image=1&table=forumtopics' class='bbc_emoticon' alt=':P' />