<h2>A calculator.</h2>

<p>The CCCC calculator is a 16-bit <a href='notation.html'>postfix</a> calculator
that uses <a href='fractions.html'>fractions</a> as primitives. It includes two
special operators, the <i>reciprocal</i> operator and the <i>yet unnamed
operator</i> that is the mirror of a division, where instead of putting the
first whole number over the second, it makes whole numbers of the numerator and
denominator.</p>

<h4>Basic operations</h4>
<ul style='columns:2'>
    <li><kbd>0-f</kbd> numbers