User blog comment:P進大好きbot/Analysis of 非想非非想 notation/@comment-32994025-20190801230503/@comment-35470197-20190827224111

Uh, 剣 just means sword. On the other hand, I used letters so that we can easily imagine how large the corresponding terms are. For example, 億 mean 10^8, and is smaller than 兆, which means 10^12.