In an arithmetic sequence of $14$ numbers, the $1$\textsuperscript{st} number is $5$; the $2$\textsuperscript{nd} number is $8$; the $3$\textsuperscript{rd} number is $11$, and so on. Find the sum of the arithmetic sequence. 
Overseas Competition->Knowledge Point->Calculation Modules->Sequences and Number Tables->Arithmetic Sequences