к ПЯТИ ЧАСАМ он нанес все необходим

к ПЯТИ ЧАСАМ он нанес все необходимые визиты и мог, наконец, вздохнуть спокойно

Results (English) 1:

five O'CLOCK he paid all necessary visits and could finally breathe calmly

Results (English) 2:

By five o'clock he paid all the necessary visits and could finally breathe easy

Results (English) 3:

at five o'clock, he paid all the necessary visits and can finally breathe easier.