www.mikescher.com/www/statics/euler/Euler_Problem-012.php

<?php

return 
[
	'number'      => 12,
	'date'        => '2014-09-11',
	'title'       => 'Highly divisible triangular number',
	'abbreviated' => true,
	'steps'       => 38855123,
	'time'        => 7566,
	'width'       => 1000,
	'height'      => 170,
	'value'       => 76576500,
];