How to perform 14 * 10^-15?

product.php

<?php

use Brick\Math\BigDecimal;

require 'vendor/autoload.php';

$left = BigDecimal::of(14);
$right = BigDecimal::one()->toScale(15)->dividedBy(BigDecimal::ten()->power(15));
$product = $left->multipliedBy($right);

echo $product, "\n";

/**
 * Two things important to note:
 *
 *   - By default, bc and gmp will work with integer, we need explicitly to tell them they need to work with decimal
 *   - By default, bc has an absurdly low scale for decimal (4), we need explicitly to choose the scale of precision
 *     That's the job of ->toScale(15), it means store 15 digits for the decimal part.
 *
 * There is perhaps a wrapper for scientific notation (I hope so), as it can be cumbersome to write long expressions.
 * If not, commit that to the lib would be a good move.
 */