diff --git a/ARTHEVAL.py b/ARTHEVAL.py
new file mode 100644
index 0000000..8098fb9
--- /dev/null
+++ b/ARTHEVAL.py
@@ -0,0 +1,73 @@
+def find_closing_p(s: str, opening_index: int) -> int:
+    skips = 0
+    for i, c in enumerate(s[opening_index + 1:]):
+        match c:
+            case ')':
+                if skips != 0:
+                    skips -= 1
+                else:
+                    return i + opening_index + 1
+            case '(':
+                skips += 1
+
+
+def do_math(s: str) -> int:
+    tokens = []
+
+    i = 0
+    for c in s:
+        if c.isdigit():
+            try:
+                tokens[i] += c
+            except IndexError:
+                tokens.append(c)
+        elif c in {'+', '-', '*', '/'}:
+            i += 1
+            tokens.append(c)
+
+    last_piece = tokens.pop(0)
+    result = 0
+    for piece in tokens:
+        result = eval(f'{last_piece}{piece}')
+        last_piece = str(result)
+    return result
+
+def do_parentheses(s: str) -> str:
+    if '(' in s:
+        opening_index: int = s.find('(')
+        closing_index: int = find_closing_p(s, opening_index)
+
+        sub_snp = s[opening_index + 1:closing_index]
+
+        return str(do_math(s[:opening_index] + do_parentheses(sub_snp)))
+
+    else:
+        if len(s) == 1:
+            return s
+        else:
+            return str(do_math(s))
+
+
+# (5*6)-(4+(1))
+def main():
+    s: str = input()
+
+    # Wish I could just use eval() but it uses pemdas
+
+    # Evaluate all parentheses
+    while '(' in s:
+        opening_index: int = s.find('(')
+        closing_index: int = find_closing_p(s, opening_index)
+
+        sub_snp = s[opening_index + 1:closing_index]
+        sub_s = s[opening_index:closing_index + 1]
+
+        s = s.replace(sub_s, do_parentheses(sub_snp))
+
+    print(do_math(s))
+
+
+
+
+if __name__ == '__main__':
+    main()
diff --git a/GDCOTFI.py b/GDCOTFI.py
new file mode 100644
index 0000000..a362382
--- /dev/null
+++ b/GDCOTFI.py
@@ -0,0 +1,13 @@
+import math
+
+def main():
+    nums = []
+
+    for i in range(3):
+        nums.append(int(input()))
+
+    print(math.gcd(*nums))
+
+
+if __name__ == '__main__':
+    main()