规则Rules：
标准数独基础上，提示表示其所在区域内两个多位数的比值（小数➗大数）。多位数的阅读方式是从左到右。
Classic rules applied. Additionally, the clue is the ratio of the multi-digit numbers adjacent to it in that colored region (the smaller one divided by the larger one). The multi-digit number should be read from left to right.
