How to subtotal in find out list

Hi
How to get subtotal in find out list result.

I want get total in list ( count, sum )...

follow url.

https://localhost:8443/facility/control/ViewFacilityInventoryItemsDetails?
inventoryItemId_op=contains&serialNumber_ic=Y&effectiveDate_fld1_op=opLessThan&reportType=BY_ITEM&inventoryItemId_ic=Y&quantityOnHandDiff=0&facilityId=WebStoreWarehouse&effectiveDate_fld0_op=equals&noConditionFind=N&productId_op=contains&quantityOnHandDiff_op=notEqual&productId_ic=Y&serialNumber_op=contains&VIEW_SIZE_1=200&VIEW_INDEX_1=0