There are 500 coffins and 500 hundred men who need them. The undertaker asks the first man to go to every coffin and open them, then he tells the 2nd man to go to every one and close it. The 3rd one goes to every 3rd coffin and so on. How many are open?

38+105= 143, 39+104=143, and you will find then adding the numbers on opposite sides, moving inwards yields the answer 138 every time. because of this, you’re going to multiply 138 times the number of pairs, which is 34. therefore, 34*138= 4692(i’m sorry if it’s the wrong numbers, but it’s the right concept)

He gained 60,900 dollars for that land