diff --git a/calculator/calculator.app.js b/calculator/calculator.app.js
index ada3a01..7e26e50 100644
--- a/calculator/calculator.app.js
+++ b/calculator/calculator.app.js
@@ -193,7 +193,7 @@ function toExponential(num, precision) {
 
 function fixFloat(n) {
   if (Math.abs(n) < 1e-10) return 0;
-  return n;
+  return parseFloat(n.toPrecision(14));
 }
 
 function addSeparators(s) {