<?php

class Math
{
    public function __construct(
        public readonly ?int $scale = null
    ) {
    }

    /**
     * @param numeric-string $x
     * @param numeric-string $y
     *
     * @return numeric-string
     */
    public function div(string $x, string $y): string
    {
        return bcdiv($x, $y, $this->scale);
    }
}