diff --git a/calculator/calculator.app.js b/calculator/calculator.app.js
index 78f4b2d..286df98 100644
--- a/calculator/calculator.app.js
+++ b/calculator/calculator.app.js
@@ -167,6 +167,17 @@ function drawSpecials() {
 
 function getIntWithPrecision(x) {
   var xStr = x.toString();
+  if (xStr.indexOf('e') > -1) {
+    var parts = xStr.split('e');
+    var mantissa = parts[0];
+    var exponent = parseInt(parts[1], 10);
+    var mantissaRadix = mantissa.indexOf('.');
+    var mantissaPrecision = mantissaRadix === -1 ? 0 : mantissa.length - mantissaRadix - 1;
+    return {
+      num: parseInt(mantissa.replace('.', ''), 10),
+      p: mantissaPrecision - exponent
+    };
+  }
   var xRadix = xStr.indexOf('.');
   var xPrecision = xRadix === -1 ? 0 : xStr.length - xRadix - 1;
   return {