🧮 How to Use This Calculator

• Click the number buttons to enter values.
• Use the operators (+, −, ×, ÷) to build your expression.
• Press “=” to get the result instantly.
• Use “C” to clear the entire display.
• Use “Del” to remove the last digit.
• You can also use your keyboard.
• Type numbers and operators directly.
• Press Enter to calculate.
• Press Backspace to delete.
• Press Escape to clear the screen.

📜 History Feature

• All your recent calculations are saved automatically.
• You can: View previous results on the right panel.
• Click any history item to reuse that calculation.
• Clear all history using the “Clear History” button.

⚠️ Invalid operations (like division by zero) will show an “Error” message.