Greg Savage: You need to understand how markups and margins work. In fact, you need to know what the difference between a markup and a margin is. And I speak to people who have 20 years experience in temp who don't know what the difference between markup and margin is. And that's like driving a bus blindfolded. You need to understand and get your pricing right. So, that you can make sure that as you grow your business, you do it profitably.