diff --git a/js/index.js b/js/index.js
index 75405d6..b40dbf6 100644
--- a/js/index.js
+++ b/js/index.js
@@ -1,42 +1,70 @@
-// ITERATION 1
-
+// 🚀 ITERATION 1, 2, 3: Calculate Subtotals and Total Price
 function updateSubtotal(product) {
-  console.log('Calculating subtotal, yey!');
-
-  //... your code goes here
+  const price = parseFloat(product.querySelector('.price span').innerText);
+  const quantity = parseInt(product.querySelector('.quantity input').value);
+  const subtotal = price * quantity;
+  product.querySelector('.subtotal span').innerText = subtotal.toFixed(2);
+  return subtotal;
 }
 
 function calculateAll() {
-  // code in the following two lines is added just for testing purposes.
-  // it runs when only iteration 1 is completed. at later point, it can be removed.
-  const singleProduct = document.querySelector('.product');
-  updateSubtotal(singleProduct);
-  // end of test
+  const allProducts = document.querySelectorAll('.product');
+  let total = 0;
 
-  // ITERATION 2
-  //... your code goes here
+  allProducts.forEach((product) => {
+    total += updateSubtotal(product);
+  });
 
-  // ITERATION 3
-  //... your code goes here
+  document.querySelector('#total-value span').innerText = total.toFixed(2);
 }
 
-// ITERATION 4
-
+// 🚀 ITERATION 4: Remove Product
 function removeProduct(event) {
-  const target = event.currentTarget;
-  console.log('The target in remove is:', target);
-  //... your code goes here
+  const productRow = event.currentTarget.closest('.product');
+  productRow.remove();
+  calculateAll();
 }
 
-// ITERATION 5
-
+// 🚀 ITERATION 5: Create New Product
 function createProduct() {
-  //... your code goes here
+  const nameInput = document.querySelector(
+    '.create-product input[type="text"]'
+  );
+  const priceInput = document.querySelector(
+    '.create-product input[type="number"]'
+  );
+  const name = nameInput.value.trim();
+  const price = parseFloat(priceInput.value);
+
+  if (name === '' || isNaN(price) || price <= 0) {
+    alert('Please enter a valid product name and price.');
+    return;
+  }
+
+  const newRow = document.createElement('tr');
+  newRow.classList.add('product');
+  newRow.innerHTML = `
+      <td class="name"><span>${name}</span></td>
+      <td class="price">$<span>${price.toFixed(2)}</span></td>
+      <td class="quantity"><input type="number" value="0" min="0" /></td>
+      <td class="subtotal">$<span>0</span></td>
+      <td class="action"><button class="btn btn-remove">Remove</button></td>
+  `;
+
+  document.querySelector('#cart tbody').appendChild(newRow);
+  newRow.querySelector('.btn-remove').addEventListener('click', removeProduct);
+
+  // Clear input fields
+  nameInput.value = '';
+  priceInput.value = 0;
 }
 
+// 🚀 EVENT LISTENERS
 window.addEventListener('load', () => {
-  const calculatePricesBtn = document.getElementById('calculate');
-  calculatePricesBtn.addEventListener('click', calculateAll);
+  document.getElementById('calculate').addEventListener('click', calculateAll);
+  document.getElementById('create').addEventListener('click', createProduct);
 
-  //... your code goes here
+  document.querySelectorAll('.btn-remove').forEach((button) => {
+    button.addEventListener('click', removeProduct);
+  });
 });