diff --git a/src/learner.rs b/src/learner.rs
index d7d8dcc..1a9f002 100644
--- a/src/learner.rs
+++ b/src/learner.rs
@@ -29,7 +29,13 @@ impl Learner {
             iterations: iterations.unwrap_or(200),
         }
     }
-    pub fn iterate(&self) -> Formula {
+    pub fn calculate_formula(&mut self) -> Formula {
+        for _ in 0..self.iterations {
+            self.best_algorithm = self.iterate()
+        }
+        self.best_algorithm.clone()
+    }
+    fn iterate(&self) -> Formula {
         let mut formulas: Vec<(Formula, f64)> = vec![];
         for _ in 0..self.formulas_per_iteration {
             let mut formula = self.best_algorithm.clone();
@@ -68,7 +74,7 @@ impl Learner {
             editor.mutate_node();
         }
     }
-    fn get_similarity(expected_output: &Vec<f64>, real_output: &Vec<f64>) -> Result<f64, ()> {
+    pub fn get_similarity(expected_output: &Vec<f64>, real_output: &Vec<f64>) -> Result<f64, ()> {
         if expected_output.len() != real_output.len() {
             return Err(());
         }
diff --git a/src/main.rs b/src/main.rs
index 3aac0ff..797f633 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,8 +1,16 @@
-use crate::{formula::Formula, node::Node};
+use fapprox::learner::Learner;
 
 mod formula;
 mod node;
 #[cfg(test)]
 mod tests;
 
-fn main() {}
+fn main() {
+    let mut learner = Learner::new(
+        vec![0., 1., 2., 3., 4., 5., 6., 7., 8., 9., 10.],
+        vec![1., 2., 3., 4., 5., 6., 7., 8., 9., 10., 11.],
+        None,
+        None,
+    );
+    println!("{:?}", learner.calculate_formula().as_text());
+}