The best way to answer this question is to describe when you identified an opportunity to save the company money and then implemented a plan. For example, you might have noticed that the company was regularly spending a lot of money on shipping costs, and you devised a strategy to reduce those expenses. Or, you may have realized that the company was wasting a lot of money on unnecessary inventory and developed a system to improve inventory management. Whatever the case may be, describe the problem you identified and how you solved it.