I want to know the answer to the following question:
How many Russians were in defense?
All the background I'm provided with is that "Just east of the Oder in Brandenburg-Neumark, at the Battle of Zorndorf (now Sarbinowo, Poland), a Prussian army of 35,000 men under Frederick on Aug. 25, 1758, fought a Russian army of 43,000 commanded by Count William Fermor.". Is that enough to answer the question?
Answer: yes