Deur die twee posisies van mekaar af te trek, kan u uitvind hoeveel mense halfpad om die tafel sit. Deur hierdie getal te verdubbel, weet u hoeveel mense in totaal rondom die tafel sit.
Subtracting the two positions you find out how many people are seated half way around the table. Doubling this number leaves you with the total amount of people.