The common method of simplification is to extract the common factor, which is also the top priority when doing the questions in the senior high school entrance examination!

The original formula =38(75+2)=38X77=2926.

The focus of this question is basic knowledge, so we must make the basic knowledge and concepts clear! Go to the website to find information or something! It's best to do some exercises to consolidate. Personally, I like onion math very much, because there is analysis behind the exercises, which is more helpful! Come on ~ drop math in seconds ~