diff --git a/README.md b/README.md
index 0912af1..0d43107 100644
--- a/README.md
+++ b/README.md
@@ -1,27 +1,31 @@
-# package_name
+# calculadora_MaOtg
 
 Description. 
-The package package_name is used to:
-	- 
-	-
+The package calculadora_MaOtg is used to:
+	Calcular:
+		- Soma
+		- Subtração
+		- Multiplicação
+		- Divisão
+		- Potência
 
 ## Installation
 
 Use the package manager [pip](https://pip.pypa.io/en/stable/) to install package_name
 
 ```bash
-pip install package_name
+pip install calculadora_MaOtg
 ```
 
 ## Usage
 
 ```python
-from package_name import file1_name
-file1_name.my_function()
+from calculadora_MaOtg import calcular as calc
+calc.soma(a, b)
 ```
 
 ## Author
-My_name
+Mateus O Mendes
 
 ## License
 [MIT](https://choosealicense.com/licenses/mit/)
\ No newline at end of file
diff --git a/package_name/__init__.py b/calculadora_MaOtg/__init__.py
similarity index 100%
rename from package_name/__init__.py
rename to calculadora_MaOtg/__init__.py
diff --git a/calculadora_MaOtg/calcular.py b/calculadora_MaOtg/calcular.py
new file mode 100644
index 0000000..a6d694a
--- /dev/null
+++ b/calculadora_MaOtg/calcular.py
@@ -0,0 +1,33 @@
+def _retorno():
+    return ")= Verificação da validade dos valores resultou em erro, confira novamente os valores fornecidos na função. =("
+
+def soma(a, b):
+    if isinstance(a, (int, float)) and isinstance(b, (int, float)):
+        return a + b
+    else:
+        return _retorno()
+
+
+def subtracao(a, b):
+    if isinstance(a, (int, float)) and isinstance(b, (int, float)):
+        return a - b
+    else:
+        return _retorno()
+    
+def multiplicacao(a, b):
+    if isinstance(a, (int, float)) and isinstance(b, (int, float)):
+        return a * b
+    else:
+        return _retorno()
+    
+def divisao(a, b):
+    if isinstance(a, (int, float)) and isinstance(b, (int, float)):
+        return a / b
+    else:
+        return _retorno()
+    
+def potencia(a, b):
+    if isinstance(a, (int, float)) and isinstance(b, (int, float)):
+        return a ** b
+    else:
+        return _retorno()
\ No newline at end of file
diff --git a/package_name/file1_name.py b/package_name/file1_name.py
deleted file mode 100644
index e69de29..0000000
diff --git a/package_name/file2_name.py b/package_name/file2_name.py
deleted file mode 100644
index e69de29..0000000
diff --git a/setup.py b/setup.py
index 4b4dc95..5ee7189 100644
--- a/setup.py
+++ b/setup.py
@@ -7,14 +7,14 @@
     requirements = f.read().splitlines()
 
 setup(
-    name="package_name",
+    name="calculadora_MaOtg",
     version="0.0.1",
-    author="my_name",
-    author_email="my_email",
+    author="Mateus O Mendes",
+    author_email="ortega.mat@outlook.com",
     description="My short description",
     long_description=page_description,
     long_description_content_type="text/markdown",
-    url="my_github_repository_project_link"
+    url="https://github.com/MaOtg/simple-package-template",
     packages=find_packages(),
     install_requires=requirements,
     python_requires='>=3.8',