What is p divided by 6

There should be another part of this question because p could be any number. All you have to do is solve for p and divide the answer that you got by 6. 

What does p mean because if you just put p divide by 6 does not make sense because you can't divide nothing to 6 

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)