diff --git a/src/task_1/index.js b/src/task_1/index.js
index f17c848..ff2c731 100644
--- a/src/task_1/index.js
+++ b/src/task_1/index.js
@@ -7,6 +7,20 @@
  */
 
 function numeralSum(number) {
+    let result = 0;
+    let stringNumber = number.toString();
+    if (!isFinite(number)) {
+        if (isNaN(number)) return 0;
+        return Infinity;
+    }
+
+    for (let i = 0; i < stringNumber.length; i++)
+    {
+        if (stringNumber[i] == "." || stringNumber[i] == "-") continue;
+        result += stringNumber[i];
+    }
+
+    return result;
 }
 
 module.exports.numeralSum = numeralSum;