The word "de" is preceded by "1". For example, the number A is 23/7, which is 3 more than the number B. (The number C is 7/ 10 of the number B) What is the number C? "1" is the second number.

The word "Bi" is followed by "1". For example, the school planted 120 trees last year. There are 5/4 more trees planted this year than last year. How many trees have been planted this year? 1 is the number of trees planted last year.