Please help me understand how the answer is 340,000.

I know the calculation is 300,000 (Units started and completed) plus 40,000 (Ending work in process), but I can't figure out where 300,000 comes from or why ending work in process is (40,000 x 100%) and not (40,000 x 40%).

The Molding Department of the Smith Company has the following production data: beginning work in process 20,000 units (60% complete), started in production 340,000 units, completed and transferred out 320,000 units, and ending working process 40,000 units (40% complete). Assume materials are entered at the beginning of the process, the equivalent units under the FIFO method for materials are: