(Press Alt+I to return to the calculator)
Add: +, Subtract: -, Multiply: *, Divide: /, Remainder: %.

Precedence: (), *, /, %, +, -.

Decimal: . point

If expression is selected (Ctrl+E): clear it with the DEL key or a new entry, modify it with
Left-Arrow or Right-Arrow.
Use Alt+Underline-key to move in document, and Tab or Shift+Tab for the next or previous item.
You can use the numeric keyboard, with Shift key for the arrows.

For measures conversions type in the quantity to search for an equivalence, select its type with Alt+1...7 and
open the box with Alt+Down-Arrow.
Select the desired conversion with the Down-arrow or the Up-arrow and Enter directly, or
Alt+o, which will make the factor or formula to be appended to the right of the expression line. Press Home key if you wish to enter
on
the left side.

**Examples**:

Expression: (1+2.5+3)*5-(7/3) Result: 30.1666...

6 * 9 % 7 Result: 5

6 * (9 % 7) Result: 12

Sphere volume, with given radius: (4/3)*Math.PI*Math.pow(radius,3)

Random number from 1 to 100: Math.floor(Math.random()*100+1)