"time of use" en format: HH:MM

how to put time of use in format: HH:MM
it usually its an integer in second calculated with “input of time” transformed in hours by division.

You will need to provide quite a lot more information as to what you are trying to do before we can help.

From the FAQ:

What language are you trying to do this in? In many languages there is a print (or printf or print… ) statement that will format the number of seconds into an hours:minutes:seconds format and perhaps truncate the seconds.