diff --git a/labs/L08/loop-arith.js b/labs/L08/loop-arith.js
new file mode 100644
index 0000000..294759d
--- /dev/null
+++ b/labs/L08/loop-arith.js
@@ -0,0 +1,17 @@
+function plus(a,b) {
+    for (let i=0; i < a; i++){
+        b++;
+    }
+    return b;
+}
+
+function mult(a,b) {
+    sum=0;
+	for(let i=0; i < a; i++) {
+		sum = plus(sum, b)
+	}
+    return sum;
+}
+
+exports.plus = plus;
+exports.mult = mult;
\ No newline at end of file