Eye of Horus and unit fractions in ancient Egypt.

After researching the Eye of Horus, I am fascinated about how the ancient Egyptians linked daily life to mathematics, and then to religion or beliefs. The complete eye is composed of number signs, which were used to describe hekat. Hekat is used for measuring amounts of grain or flour. 

There are many such examples in our life. For example, the number seven has its unique place in many religions and cultures.

In Buddhism, there are seven factors of awakening. 

In Christian teachings, there are seven deadly sins. 

In Chinese culture, we use "七七四十九天“ (which means" seven times seven gives forty-nine days") to describe a task that is very difficult. This is because the number seven is considered as "complete". By saying this task took one person 7x7=49 days to finish (exaggerating, of course), it shows that the task in complex, and the person spent a lot of time to perfect every aspect of the task.