**Step 1:** Imagine you have 15 big 🍎 apples!
🍎 🍎 🍎 🍎 🍎
🍎 🍎 🍎 🍎 🍎
🍎 🍎 🍎 🍎 🍎
🍎 🍎 🍎

**Step 2:** Now, add 4 more big 🍎 apples!
🍎 🍎 🍎 🍎

**Step 3:** Put them together:
🍎 🍎 🍎 🍎 🍎
🍎 🍎 🍎 🍎 🍎
🍎 🍎 🍎 🍎 🍎
🍎 🍎 🍎 🍎

**Step 4:** Count all apples!
$15 + 4 = 19$ apples 🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎

Great job! You have 19 apples now! 🎉