Peter sold an investment property in Sydney and the transaction was  settled on 30 June 2012 for $800,000. He incurred legal fees of $1,100  and a real estate agent's commission of $9,900 in relation to  the sale.  Peter purchased the investment property in March 1987 for $100,000. He  paid $2,000 in stamp duty on the transfer and incurred legal fees of  $1,000 in relation to the purchase.
a) Calculate the capital gain under the indexation method.
b) Calculate the capital gain under the 50% discount method.
c)  Which method should be used in this case?