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diff --git a/src/content/chapter0_basics/lesson04_ints/code.gleam b/src/content/chapter0_basics/lesson04_ints/code.gleam
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+import gleam/io
+import gleam/int
+
+pub fn main() {
+  // Int arithmetic
+  io.debug(1 + 1)
+  io.debug(5 - 1)
+  io.debug(5 / 2)
+  io.debug(3 * 3)
+  io.debug(5 % 2)
+
+  // Int comparisons
+  io.debug(2 > 1)
+  io.debug(2 < 1)
+  io.debug(2 >= 1)
+  io.debug(2 <= 1)
+
+  // Equality works for any type
+  io.debug(1 == 1)
+  io.debug(2 == 1)
+
+  // Standard library int functions
+  io.debug(int.max(42, 77))
+  io.debug(int.clamp(5, 10, 20))
+}