Online calculator

1. Click the [number keys] or [function keys] on the web calculator to perform calculations.

2. You can also perform calculations using the number keys and symbol keys (such as “+ – × ÷ , . =”) on your keyboard.

3. Press the "Backspace" key on the keyboard to delete the last entry.

4. Pressing the "Enter" key on the keyboard is equivalent to pressing "=" and will perform the calculation immediately.

5. Explanation of some function keys:

(1) AC: Clears the numbers in the display area or clears the memory.

(2) M+: Adds the number in memory to the number on the display, calculates the result, and stores it in memory.

(3) M-: Subtracts the number on the display from the number in memory, calculates the result, and stores it in memory.

(4) MR: Displays the number in memory on the screen.

(5) MC: Clears the contents of memory.

(6) Rad: Switches to radians (used for trigonometric and inverse trigonometric calculations).

(7) Deg: Switches to degrees.

(8) RND: Generates a random number between 0 and 1.