diff --git a/src/format.rs b/src/format.rs
index 56415e0..b44f0a4 100644
--- a/src/format.rs
+++ b/src/format.rs
@@ -36,12 +36,24 @@ pub fn format_date(date: &chrono::NaiveDate) -> String {
 ///
 /// let number = 12345;
 /// let formatted = format_number(number);
-/// assert_eq!(formatted, "12345");
+/// assert_eq!(formatted, "12.345");
 /// ```
 #[must_use]
 pub fn format_number(num: i32) -> String {
-    // TODO : Implement custom formatting
-    num.to_string()
+    let mut str = num.to_string();
+    let mut result = String::new();
+    let mut count = 0;
+
+    str = str.chars().rev().collect();
+
+    for (i, c) in str.chars().enumerate() {
+        if i != 0 && i % 3 == 0 {
+            result.push('.');
+        }
+        result.push(c);
+    }
+
+    result.chars().rev().collect()
 }
 
 /// Converts a number of seconds into a formatted string in `HH:MM:SS` or `MM:SS` format.
diff --git a/src/lib.rs b/src/lib.rs
index ffdcff6..44842e3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -8,7 +8,6 @@ pub mod page;
 pub mod request;
 pub mod result;
 
-// TODO : API Pagination?
 // TODO : CORS?
 
 // Postgres