What is the use of EXPR in shell script?

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Tags

1. #command
2. #evaluates
3. #multiplication
4. #string
5. #addition
6. #output
7. #expressions
8. #given
9. #substring
10. #strings
11. #regular
12. #corresponding
13. #expression
14. #displays
15. #integers
16. #evaluating
17. #length
18. #subtraction
19. #basic
20. #modulus
21. #division
22. #operations