src/Numbers/Number.php
public function getSuffixNotation($magnitude = null)
    {
        $magnitude = isset($magnitude) ? $magnitude : $this->getMagnitude();
        $exp = 3 * floor($magnitude/3);

        return new SuffixNotation(pow(10, -$exp) * $this->number, new MagnitudeSuffix($magnitude));
    }
public function getSuffixNotation($magnitude = null)
    {
        $magnitude = isset($magnitude) ? $magnitude : $this->getMagnitude();
        $exp = 3 * floor($magnitude/3);

        return new SuffixNotation(pow(10, -$exp) * $this->number, new MagnitudeSuffix($magnitude));
    }
@param int $magnitude

@return SuffixNotation