apf薛老师

Proceeds on sale: $55x500$27,500
Payoff loan: $55x500x0.55-$13,750
Margin interest paid: $13,750x0.06-$825
Dividend received: $1.80x500+$900
Sales commission paid: $0.05x500-$25
Remaining equity$13,800
Initial investment (including commission): ($50x500x0.45)+($0.05x500)$11,275
Return on the initial investment:
($13,800-$11,275)/$11,27522.4%