Stoltenberg Co$.$ had the following information for the month of June:

$\backslash$table$[[$Work in process beginning inventory, June $1,2,000$ units$],[$Units transferred in$,16,000$ units$],[$Work in process ending inventory, June $30,4,000$ units$]]$

Beginning work$-$in$-$process inventory is $30$ percent complete as to conversion. Ending work$-$in$-$process inventory is $50$ percent complete as to conversion. Materials are added at the end of the process.

The equivalent units for transferred$-$in costs under the FIFO method are calculated to be: