First Exec-PHP plugin has to be installed to be able to run php code from page. Then just put this code to eShop cart page below shortcode which is already there. Code is:
Kwanza Exec-PHP Plugin ina kuwa imewekwa kuwa na uwezo wa kukimbia code php kutoka ukurasa . Basi tu ya kuweka kanuni hii kwa ukurasa eShop gari chini shortcode ambayo tayari kuna . Code ni: