diff --git a/script.js b/script.js
index fcc6d25..73a4885 100644
--- a/script.js
+++ b/script.js
@@ -68,18 +68,6 @@ inputOnChange();
 let process = 1;
 //resize burst time rows size on +/-
 
-function gcd(x, y) {
-    while (y) {
-        let t = y;
-        y = x % y;
-        x = t;
-    }
-    return x;
-}
-
-function lcm(x, y) {
-    return (x * y) / gcd(x, y);
-}
 
 function lcmAll() {
     let result = 1;
diff --git a/utils.js b/utils.js
new file mode 100644
index 0000000..ed5bccc
--- /dev/null
+++ b/utils.js
@@ -0,0 +1,14 @@
+function gcd(x, y) {
+    while (y) {
+        let t = y;
+        y = x % y;
+        x = t;
+    }
+    return x;
+}
+
+function lcm(x, y) {
+    return (x * y) / gcd(x, y);
+}
+
+