20 gallons, we see that the units work out nicely. And so that's essentially how much has drained out in the first 20 minutes. And then this green area is going to be 40 minutes, 40 minutes times 10 gallons per minute, times 10, and actually maybe the units, since I'm breaking it up in this strange way, I'll just multiply, I'll just figure out this area in a unitless way. So 40 times 10, which is equal to 400. And then finally in blue, I have 40 times this height right over here between 10 and 20 is another 10, but then I'm gonna multiply that times 1 1⁄2. So it's gonna be 40 times 10 times 1 1⁄2, which is going to be 200. And so you add all of these together, these areas together, you're going to get 400 plus 200 is 600 plus 20, you're going to have 620 gallons.