diff --git a/general.ui b/general.ui
--- a/general.ui
+++ b/general.ui
@@ -193,6 +193,16 @@
           </property>
          </widget>
         </item>
+        <item>
+         <widget class="QCheckBox" name="kcfg_RepeatLastOperation">
+          <property name="text">
+           <string>Repeat operation for each result</string>
+          </property>
+          <property name="checked">
+           <bool>true</bool>
+          </property>
+         </widget>
+        </item>
        </layout>
       </item>
      </layout>
diff --git a/kcalc.kcfg b/kcalc.kcfg
--- a/kcalc.kcfg
+++ b/kcalc.kcfg
@@ -103,6 +103,10 @@
       </whatsthis>
       <default>true</default>
     </entry>
+    <entry name="RepeatLastOperation" type="Bool" key="repeatlastoperation">
+      <label>Enables that the last operation is repeated when "=" is pressed</label>
+      <default>false</default>
+    </entry>
     <entry name="CalculatorMode" type="Enum">
       <choices>
         <choice name="simple">
diff --git a/kcalc_core.h b/kcalc_core.h
--- a/kcalc_core.h
+++ b/kcalc_core.h
@@ -138,6 +138,10 @@
 
     KNumber last_number_;
 
+    Operation last_operation_;
+    KNumber last_repeat_number_;
+    bool repeat_mode_;
+
     bool percent_mode_;
 
     bool evalStack();
diff --git a/kcalc_core.cpp b/kcalc_core.cpp
--- a/kcalc_core.cpp
+++ b/kcalc_core.cpp
@@ -25,6 +25,7 @@
 */
 
 #include "kcalc_core.h"
+#include "kcalc_settings.h"
 
 #include <QDebug>
 
@@ -169,10 +170,11 @@
 }
 
 
-CalcEngine::CalcEngine() : percent_mode_(false) {
+CalcEngine::CalcEngine() : repeat_mode_(false), percent_mode_(false) {
 
     last_number_ = KNumber::Zero;
     error_ = false;
+    last_operation_ = FUNC_EQUAL;
 }
 
 KNumber CalcEngine::lastOutput(bool &error) const {
@@ -841,6 +843,26 @@
     tmp_node.number = number;
     tmp_node.operation = func;
 
+    if (KCalcSettings::repeatLastOperation()) {
+        if (func != FUNC_EQUAL && func != FUNC_PERCENT) {
+            last_operation_ = tmp_node.operation;
+            repeat_mode_ = false;
+        }
+
+        if (func == FUNC_EQUAL || func == FUNC_PERCENT) {
+            if (!repeat_mode_) {
+                repeat_mode_ = last_operation_ != FUNC_EQUAL;
+                last_repeat_number_ = number;
+            } else {
+                Node repeat_node;
+                repeat_node.operation = last_operation_;
+                repeat_node.number = number;
+                tmp_node.number = last_repeat_number_;
+                stack_.push(repeat_node);
+            }
+        }
+    }
+
     stack_.push(tmp_node);
 
     evalStack();
@@ -877,6 +899,8 @@
 void CalcEngine::Reset()
 {
     percent_mode_ = false;
+    repeat_mode_ = false;
+    last_operation_ = FUNC_EQUAL;
     error_ = false;
     last_number_ = KNumber::Zero;