diff --git a/src/index.js b/src/index.js
index 2449854..00a65e8 100644
--- a/src/index.js
+++ b/src/index.js
@@ -409,7 +409,7 @@ function updateNumRatsCalculator() {
     const validator = new Validator();
     const failed_checks = validator.failCageNumberIndependent(dimensions, numFullFloors);
 
-    let overallArea = validator.getOverallArea(dimensions, );
+    let overallArea = validator.getOverallArea(dimensions, numFullFloors);
     let allowedNumRats;
     try {
         allowedNumRats = validator.allowedNumberOfRats(overallArea);
@@ -426,7 +426,7 @@ function updateNumRatsCalculator() {
 
     resultsDiv.innerHTML = "";
     const p = document.createElement('p');
-    p.textContent = i18next.t("cage-for-x-rats", {"num_rats": allowedNumRats});
+    p.textContent = i18next.t("cage-for-x-rats", {"num_rats": Math.floor(allowedNumRats)});
     resultsDiv.appendChild(p);
     resultsDiv.appendChild(result);