 5, 10, 12. So, two blocks of sixes is 12. Are we happy with that? Can we join you? Let's look at three blocks of sixes. All hands. All hands. Wonderful. Okay, three sixes. I know some of you know your tables, but 5, 10s, 15, 60, 70, 80. In your head. In your head. You could do that. Think of three sixes, three blocks of five, five, 10, 15, 100. On all tables, we're going to now have how many sixes? How many people? Wish it that dog, please, please. Four. Four sixes. Can we add them up? Let's do them in five. Hands first. Five, 10, 15, 20. Let's actually yawning on camera. Can you sit down? The Romans, they did a lot in their head, but when they wanted to know what they couldn't buy four blocks of sixes, I'm just going to put that four there. They would write this, and one hand, two hands, three hands, four hands, and four fingers. So, it's 10, 20, 24. So they wrote it that way. They wrote it in the hand and some fingers. Can we now get how many seats of you? One, two, three, five. One, two, three, four, five. Five. Can you all five come? Okay, yes. I'll need you more. Okay, get in the room, five of you. Ah, do you know what to do? Okay, all right. We're going to have five blocks of sixes. Let's count them up. Five, 10, 50, 20, 25, 26, 27, 28, 29, 30. Can you sit down? No, we want five blocks of them. Five. And I'm going to write it not the way the Romans just to remind us because we understand that. So we've got five, 10, 15, 20, 25, and then we had all those five fingers, and those five fingers could be written as one whole hand. Look, misty five. Misty five. All right, how many have we got here? One, two, three, four, five, six, seven. Can you stand up, you seven? Stand up, seven. Seven, sixes. Just get in the line. Just get in the line. Let's hold up your fingers. Hold up your fingers. Seven. Seven knots of six. Easy to count. Five, 10, 15, 20, 25, 30, 35, and now 36, 38, 39, 40, 41, 42. Well, seven, sixes, 42. OK, down wishes.