Question: The agent's sales commision remain unchanged at $15\%.$ What is the break$-$even point in dollar sales? Explain to me why the fixed expense is $$10,732,500$ and it is not $$4,792,000($mfg exp$+$ fixed marketing exp. $+$ fixed admin exp.$)$ when calculating the BEP.

The recent answer I got was $$10,732,500$ from chegg, and I got confused about why is that the answer. Please help