Hello. So in this problem, we are given the speed of light, which is 3 times 10 to the eighth meters per second. And we are asked to convert the speed of light to some weird, I guess very old units for longs, which is going to be a unit of distance per for night. It is like the video game, which is a unit of time. And so this is just about conversion, which essentially means that you want to multiply times one until you get what you want. And we will see how that is done. So we are giving a little bit more information about the full longs and for nights. So a full long is equal to one eight of a mile, which is equal to 660 feet, which is equal to 220 yards, which is equal to 40 rods, which is equal to 10 chains. And there is a lot of information here that you might use, but it's perhaps not necessary. So I know the conversion factor between miles and meters. So I can just use this first quality. So 1,609 meters is equal to one mile. Okay, so this is really the only one that we need for for four longs. And for four nights, we are told that one fortnight is equal to 14 days. And over here we have seconds. So we need a conversion factor between and days and seconds, which is not that difficult to get. So let's start to do the multiplication. The speed of light is three times 10 to the eight meters in one second. So you want to multiply times one and you want the seconds to be up here. So, first let's get to days. There's 3600 seconds in one hour. So 60 times 60 minutes and 60 seconds. So you get the 3600 seconds. And we know that there's 24 hours in one day. And there are 14 days in one fortnight. So we can get rid of the seconds over here. The hours. You know, they are on the denominator. Well, this one is in the numerator. So we can cancel the value. They're equal to one days. And now we have, if we multiply this times, there's 600 times 24 times 14. We get meters per fortnight, which is almost what we want. So we can continue over here. So we said that we're going to use that is one eight of a mile in a fur long. So let's get to miles first. We have the meters up here. Now this is just a continuation. It's just that I don't have enough space. So we want the meters down here. So 1609 meters is one mile. And one eighth of a mile is one fur long. So this meter is up here. This one is down here. This mile is up here. So now we have the fur longs on top. And it's the only unit that we have on top. And it's a unit of length. This and over here we have the fourth night. Just a unit of time. And it's the only unit that we have in the denominator. So you know we can just do the calculation. So this is three times ten to the eighth times 3600 times 24 times 14. And this is one. This one is also one. So this is 3.6 times 10 to the 14. And the units are fur longs. And down here we only have, oh, we have to multiply. Oh, this is fine. So 1609 times one divided by eight. And so this is 211 four nights. All right. So if we divide the 3.6 times 10 to the 14 by 201, this whole thing, I guess this one is equal to 1.8 times 10 to the 12. And the units are fur longs. And the total of the units are fur four nights. All right. So we get this pit of light in very old and weird units. But you know, if they are standard, then you can express whatever quantity you want in that standard. It might not be very useful because nobody knows or almost nobody knows what a fur long is or how long it is. But yeah, this is the pit of light. Thank you.