During the Three Kingdoms period, did Zhuge Liang and Sima Yi have to know a little math?

Mathematics must be understood. Sun Tzu's art of war commanding soldiers is a good example. Actually, we should use multiplication. From now on, all handsome or military people have to know some math. Another reason is that the problem of grain and grass is also a big problem for the army, which also includes mathematics. In those days, people like Zhuge Liang and Sima Yi had to know not only mathematics, but also geography, astronomy and even a little machinery. In ancient China, there was a mysterious name for this kind of person's learning, "Yin-Yang Studies" or "Metaphysics" (not fortune telling now). Famous teachers of Yin and Yang in history, such as Jiang Ziya, Guiguzi, Sean, Zhuge Liang (controversial), Liu Ji, Prime Minister in Black and so on.