Online Calculator

1. Use the mouse to click on the [number keys]/[function keys] of the web calculator to compute.

2. You can also use the number keys and symbol keys such as "+ - × ÷ , . =" on your keyboard to perform calculations.

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

4. Press the "Enter" key on the keyboard, which is equivalent to the "=" key, to perform the calculation immediately.

5. Description of some function keys:

(1) AC: Clears the number in the display area or performs a clear constant operation.

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

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

(4) MR: Recalls and displays the number stored in the memory.

(5) MC: Clears the contents stored in the memory.

(6) Rad: Switches to radian mode (used for trigonometric/inverse trigonometric calculations).

(7) Deg: Switches to degree mode.

(8) RND: Outputs a random number greater than 0 and less than 1.