diff --git a/desktop/sources/scripts/library.js b/desktop/sources/scripts/library.js
index 43649e4..b4fe272 100644
--- a/desktop/sources/scripts/library.js
+++ b/desktop/sources/scripts/library.js
@@ -144,20 +144,20 @@ function Library (ronin) {
 
   // Math
 
-  this.add = function (a, b) {
-    return a + b
+  this.add = function (...args) {
+    return args.reduce((sum, val) => sum + val)
   }
 
-  this.sub = function (a, b) {
-    return a - b
+  this.sub = function (...args) {
+    return args.reduce((sum, val) => sum - val)
   }
 
-  this.mul = function (a, b) {
-    return a * b
+  this.mul = function (...args) {
+    return args.reduce((sum, val) => sum * val)
   }
-
-  this.div = function (a, b) {
-    return a / b
+  
+  this.div = function (...args) {
+    return args.reduce((sum, val) => sum / val)
   }
 
   this.mod = function (a, b) {
diff --git a/examples/math.lisp b/examples/math.lisp
new file mode 100644
index 0000000..7a6906e
--- /dev/null
+++ b/examples/math.lisp
@@ -0,0 +1,5 @@
+(
+    (echo (add 2 3))
+    (echo (sub 22 3 4 5))
+    (echo (mul 2 3 4 5))
+)
\ No newline at end of file