How did the Prophet perform many tasks on the Day of Sacrifice?

Question:
... In the hadith, it is reported that he (peace and blessings be upon him) prayed in Makkah on the Day of Sacrifice. However, if we look at the tasks the Prophet (peace and blessings be upon him) performed, they may have consumed most of the time. He slaughtered sixty-three camels with his own hand (peace and blessings be upon him), and waited until they were divided, then cooked, then he drank from their broth and ate from their meat. Before this, he shortened his hair, explained to the people the rulings regarding that, and they asked him questions. This may have taken up time, and perhaps he could not have gone to Makkah?

Answer:
The day is long. The Prophet’s Hajj was in the days of heat, long days. He slaughtered early; he slaughtered the camels early (peace and blessings be upon him), and they ate from them. Then he went and prayed the midday prayer in Makkah (peace and blessings be upon him). The time is ample, and the forenoon is long in the days of heat, the days of summer. It is close to eight hours from dawn to midday. If he stoned the pillars after the sun rose, it could be close to five hours. It is possible he finished slaughtering the camels and cooking them in three hours or around that, or four. Then he went to Makkah an hour before noon or so. It is possible. The matter is ample because the day is long, and the forenoon is long, in the days of the heat.
Q: Was the crowd not like it is today?
A: And the crowd was small.