Yes, now, and hey thanks Darren for the questions, so just to make sure I caught it. The first is around Samsung, second one is around scaling Single Tap, third one around gross margins impact, and then fourth around OpEx. So assuming I got that right, I'll take the first two and then turn it over to Barrett for the last two. Yes on Samsung, yes we're excited. And I mentioned in my comments, we're looking at the relationship from a breadth perspective and a debt perspective and breadth meaning more markets for Open Market, more geography that I touched on. On the breadth, also as you alluded to, means additional mobile operator relationships such as Telefonica. And so, I think this is a great proof point of the relationship getting off to a great start and expanding. We expect to continue to scale additional markets as well as scale with additional operators. So, yes we feel like we're just getting started here, but off to a good start. And then the depth side, we started with one model and we've added another model, started with our Wizard product. We anticipate launching additional products as well with Samsung. So I think we're off to a good start in terms of that relationship being a very material driver for our future business. Yes, and your question on Single Tap, yes, we expect that some of those mobile measurement partners that we announced in our press release, we'll start seeing some of those start getting live this summer. We're just getting started with them, but I think that's going to be a key driver for us to accelerate our scaling efforts on Single Tap, so that's a major focus area for us. And then secondly, that remaining 15% of the market, that partner that wasn’t part of that press release, we're engaged in to talk with about how to get them on board with what we're doing. And what I'm really pleased with is, you're seeing Digital Turbine taking industry leadership role here versus just working with one to two of these to be able to bring the entire market to bear something that I think shows the scale of our platform now being the third largest distributor of android applications here in the United States after Google and Facebook. So, you'd start to see us have a little bit more pull in the industry I think is also a positive sign. I'll turn over to Barrett for the other…