In Atlantis you can perform calculations directly in the document window. For this type the required arithmetic expression in the document, select this expression, then press the Alt+= keys or click the Calculate toolbar button. If your expression is OK, Atlantis would place the computed result onto the clipboard so that you could paste it to this or any other document.
Your expressions for calculation could include integer numbers as well as real numbers both in floating point notation and scientific notation. For example:
732 -12.65 .65 34E87 14.3e-5
You can use the following arithmetic operators in your expressions:
|/ or :||Division||10/3
Your expressions can include the "percents" sign % and currency signs and abbreviations ($, €, £, ¥, USD). For example, you could use the following expressions in your documents:
$15.50 + $179.28
(1298 € + 9%) - 207.50 €