求助MOCK 82 第84题 commission, investment, following, investor, purchase

nitoha

The following data pertains to a margin purchase of a stock by an investor
Stock's purchased price: $50/share
Sale price: $55/share
Shares purchased:500
Margin: 45%
Call money rate: 6%
Dividend1.80/share
Transaction commission on purchase: $0.05/share
Transaction commission on sale: $0.05/share
If the stock is sold one year after the purchase, the total return on the investor's investment is closest to:

上述题目，老师您看我这样解是否正确：
1. 买股票支付的钱=50*500*45%+0.05*500=11,275
2. 卖股票所得加股利=55*500+1.80*500=28,400
3. 支付利息及手续费=50*500*55%*6%+0.05*500=850
Total return=2-所借款项-1-3=2,525

盼复！谢谢！