# Overview

## Range

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong><code>range.down()</code></strong></td><td>Returns the range of numbers where <code>$from</code> is <strong>higher</strong> than <code>$to</code>.</td><td></td><td><a href="range/range.up">range.up</a></td></tr><tr><td><strong><code>range.up()</code></strong></td><td>Returns the range of numbers where <code>$from</code> is <strong>lower</strong> than <code>$to</code>.</td><td></td><td><a href="range/range.down">range.down</a></td></tr></tbody></table>

## Math

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong><code>math.calculate()</code></strong></td><td>Performs value and operand calculation by using a given operator <code>+</code> addition, <code>-</code> subtraction, <code>*</code> multiplication, <code>/</code> division of string type.</td><td></td><td><a href="math.calculate">math.calculate</a></td></tr><tr><td><strong><code>math.range()</code></strong></td><td>Returns the range of numbers.</td><td></td><td><a href="math.range">math.range</a></td></tr><tr><td><strong><code>math.strip-unit()</code></strong></td><td>Strips the unit from a given <code>$number</code>.</td><td></td><td><a href="math.strip-unit">math.strip-unit</a></td></tr></tbody></table>