diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e8046b81b2..16c745d2ed 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1 +1,21 @@
  All contributions, bug reports, bug fixes, documentation improvements, enhancements, and ideas are welcome.
+Contribution Guidelines!
+
+This document outlines the guidelines for contributing to the development of Simple Interest and Compound Interest Calculations.
+
+Code Style
+Please follow the coding style and conventions used in the existing codebase. This helps maintain consistency across the project.
+
+Documentation
+Ensure that your contributions are well-documented. Include comments in your code where necessary and provide a clear and concise description of your changes in the pull request.
+
+Testing
+Before submitting a pull request, make sure your changes have been tested thoroughly. Include relevant test cases and ensure that existing tests pass.
+
+Issue Tracker
+Check the issue tracker for any open issues or feature requests. If you're working on something, please comment on the issue to let others know.
+
+Code Review
+All contributions will go through a code review process. Be open to feedback and be willing to make changes if necessary. Code reviews help maintain code quality and consistency.
+
+Thank you for your contribution!
\ No newline at end of file
diff --git a/simple-interest.sh b/simple-interest.sh
index 27a60fcb55..bec63d2de8 100755
--- a/simple-interest.sh
+++ b/simple-interest.sh
@@ -4,7 +4,7 @@
 
 # Author: Upkar Lidder (IBM)
 # Addtional Authors:
-# <your Github username>
+# <Divya Sree>
 
 # Input:
 # p, principal amount
@@ -21,6 +21,6 @@ read r
 echo "Enter time period in years:"
 read t
 
-s=$(expr $p \* $t \* $r / 100)
+si=$(expr $p \* $t \* $r / 100)
 echo "The simple interest is: "
-echo $s
+echo "$si"