37:34 That is now the basis for your test firmware where you need to make sure like, say, you've got, you know, like a CAN bus or something. You wanna make sure it's good. Like, you just run arbitrary data through it at, like, max speed, you know, as part of your underlying test or your regression testing just to make sure that when you do new hardware revisions, it's like that. You know, like, again, a lot of these things you can, like, build off of each other. And so keeping that around and also treating that early code as a first class citizen.