diff --git a/src/components/FormField/components/Table/RenderTable/components/DefaultCell/index.js b/src/components/FormField/components/Table/RenderTable/components/DefaultCell/index.js
index 4a3086e..6351f92 100644
--- a/src/components/FormField/components/Table/RenderTable/components/DefaultCell/index.js
+++ b/src/components/FormField/components/Table/RenderTable/components/DefaultCell/index.js
@@ -6,12 +6,17 @@ const DefaultCell = ({ getValue, row: { index }, column: { id }, table }) => {
         table.options.meta?.updateData(index, id, e.target.value);
     };
 
+    const onFocus = (e) => {
+        e.target.select();
+    }
+
     return (
         <input
             disabled={disabled}
             value={initialValue ?? ''}
             onChange={(e) => table.options.meta?.updateData(index, id, e.target.value)}
             onBlur={onBlur}
+            onFocus={onFocus}
             className="w-full px-2 py-1 border rounded"
         />
     );
diff --git a/src/components/FormField/components/Table/RenderTable/components/LastRowCell/index.js b/src/components/FormField/components/Table/RenderTable/components/LastRowCell/index.js
index cb56a61..3a35e77 100644
--- a/src/components/FormField/components/Table/RenderTable/components/LastRowCell/index.js
+++ b/src/components/FormField/components/Table/RenderTable/components/LastRowCell/index.js
@@ -6,7 +6,7 @@ const LastRowCell = ({columnId, lastRows, columnMeta = {}, getColumnDataFn}) =>
 
     if (columnMeta.enableFormula) {
         const getAllRowsValues = getColumnDataFn(columnId)
-            .map(v => isEmpty(v) ? 0 : v);
+            .map(v => isEmpty(v) || isNil(v) ? 0 : v);
 
         if (cellValue === 'sum') {
             cellValue = sum(getAllRowsValues);
diff --git a/src/components/FormField/components/Table/RenderTable/components/NumericFormulaCell/index.js b/src/components/FormField/components/Table/RenderTable/components/NumericFormulaCell/index.js
index 089bc82..58a6f25 100644
--- a/src/components/FormField/components/Table/RenderTable/components/NumericFormulaCell/index.js
+++ b/src/components/FormField/components/Table/RenderTable/components/NumericFormulaCell/index.js
@@ -7,6 +7,10 @@ const NumericFormulaCell = ({ getValue, row: { index }, column: { id }, table })
         table.options.meta?.updateData(index, id, numValue);
     };
 
+    const onFocus = (e) => {
+        e.target.select();
+    }
+
     const onChange = (e) => {
         if (e.target.value === 0 || !isNaN(e.target.value)) {
             table.options.meta?.updateData(index, id, e.target.value);
@@ -19,6 +23,7 @@ const NumericFormulaCell = ({ getValue, row: { index }, column: { id }, table })
             disabled={disabled}
             value={initialValue ?? 0}
             onChange={onChange}
+            onFocus={onFocus}
             onBlur={onBlur}
             step="any"
             className="w-full px-2 py-1 border rounded"