function solve() {
    let products=[];
    Array.from(document.querySelectorAll("#exercise .product button"))
    .forEach(e=>{e.addEventListener("click",AddToCart)});
    document.querySelectorAll("#exercise button")[3].addEventListener('click',Buy);
    const textDiv=document.getElementsByTagName("textarea")[0];

    function AddToCart(e){
        let targetProduct=e.target;
       let productDiv= targetProduct.parentNode;
       let price=+productDiv.children[2].textContent.split(': ')[1];
       let name=productDiv.children[1].textContent;
       let product={
           'Name':name,
           "Price":price
       }
       products.push(product);
       let addedProduct=`Added ${product.Name} for ${product.Price.toFixed(2)} to the cart.\n`;
       textDiv.value+=addedProduct;
    }
    function Buy(){
        let productNames=products.map(x=>x.Name);
        let unique = [...new Set(productNames)];       
        let sum=products.map(x=>x.Price).reduce((a,b)=>{return a+b},0).toFixed(2);
        let shoppingList=`You bought ${unique.join(', ')} for ${sum}.\n`;
        textDiv.value+=shoppingList;
    }
}