Total:
0

Total: 0
History:

### How to Use Adding Machine Calculator

#### Step-by-Step Instructions

1. Select the Operation:

• Use the dropdown menu labeled “Operation” to choose the arithmetic operation you want to perform. The options include:
• + (Add): To add the entered number or percentage to the total.
• − (Subtract): To subtract the entered number or percentage from the total.
• × (Multiply): To multiply the total by the entered number or percentage.
• ÷ (Divide): To divide the total by the entered number or percentage.
2. Enter the Value:

• In the “Entry” field, input the number or percentage you want to use in the selected operation.
• For percentage calculations, enter the value followed by a `%` sign (e.g., `20%`), and the calculator will interpret it as a percentage of the current total.
3. Perform the Operation:

• Click the “Enter” button to apply the selected operation with the entered value.
• The calculator will update the total and record the operation in the history.
4. Review the Results:

• The updated total will be displayed under the “Total” section at the top.
• The history of all operations performed will be shown in the “History” section, allowing you to track how the final total was calculated.
5. Repeat or Reset:

• You can continue adding more operations by repeating the steps above.
• If you need to start over, simply refresh the page, and the calculator will reset all values.

#### Example Scenarios

Example 1: Simple Addition and Multiplication

• Operation: `+`, Number: `100`
Result: Total becomes `100`.
• Operation: `×`, Number: `20%`
Result: Total becomes `20` (20% of 100).
• Operation: `+`, Number: `50`
Result: Total becomes `70`.
• Operation: `÷`, Number: `2`
Final Result: Total becomes `35`.

Example 2: Using Percentages

• Operation: `+`, Number: `500`
Result: Total becomes `500`.
• Operation: `−`, Number: `10%`
Result: Total becomes `450` (10% of 500).
• Operation: `×`, Number: `1.5`
Result: Total becomes `675`.
• Operation: `+`, Number: `30%`
Final Result: Total becomes `877.5` (30% of 675).

#### Quick Tips

• Percentage Calculations: The percentage is always calculated based on the current total. For instance, if your total is `200` and you enter `10%`, it calculates `10% of 200`, which is `20`, and adds or subtracts that from the total based on the selected operation.
• History Tracking: The calculator keeps a detailed log of all operations performed, allowing you to review and understand how the final total was reached.
• Precision: The total is rounded to two decimal places for clarity and precision in financial calculations.