function solve() {
   let textArea = document.querySelector("body > div > textarea");
   [...document.querySelectorAll(".add-product")].forEach(add => {
      add.addEventListener("click", handle)
   });
   function handle(e) {
      let title = e.target.parentElement.previousElementSibling.firstElementChild.innerText;
      let price = e.target.parentElement.nextElementSibling.innerText;

      textArea.value += `Added ${title} for ${price} to the cart.\n`;
   }
   document.querySelector("body > div > button").addEventListener("click", buy);
   function buy(){
      let finalText = textArea.value.split('\n').filter(x=> x.length> 0);
      let boughtProducts = [];
      let totalPrice = 0;
      for (const bought of finalText) {
         boughtProducts.push(bought.split(' ')[1]);
         totalPrice+= +(bought.split(' ')[3]);
      }
      textArea.value += `You bought ${boughtProducts.join(', ')} for ${totalPrice.toFixed(2)}.`;
      Array.from(document.querySelectorAll("button")).map(x => x.disabled=true);
   }
};