Goal: Use mathematical expression and operator priority correctly

Assignment: For the last week, TheTrainCompany has received complaints that most of their scheduled trips have accumulated significant delays. Since there were no reports of issues within the network or train speed, the investigation turned to the delays related to increased boarding time at each station.

Let the user input the delay in seconds accumulated in $5$ consecutive stations and store these in integer variables $d1,d2,$dots,$d5.$ Then, output the average delay.

Sample run:

Input delays: $5,10,12,3,6$

The average delay was $8\mathrm{.}2$ seconds.