* Calculator with virtual tapeYou can switch between calculator view and and tape view to have a full screen view of the tape.The tape of the calculator can have up to 1000 lines.

* Calculator support corrections on the tapeYou can change values on the virtual tape to make corrections.

* Calculator allows annotations on the tapeYou can write a comment to a tape line.

* Calculator with fixed point arithmetic or floating point.Fixed point arithmetic has 20 digits and 0 - 4 decimal places.The floating point arithmetic has 64 bits (IEEE double precision).By default, the calculator works with fixed point arithmetic and 2 decimal places as needed for most calculations with amounts.

* Calculator supports three rounding modes: up, down or 5/4.

* Calculator has percent calculation to add or subtract percent values.This makes it very easy to calculate tax amounts with the calculator.

* Calculator support operator precedence (multiplication/division over addition/subtraction) and displays interim results (optional)

This is the Pro variant of Office Calculator, a Free variant with ads is also available.