Brief Exercise 12-6 Fair value option; available-for-sale securities [LO12-7]

S&L Financial buys and sells securities that it typically classifies as available-for-sale. On December 27, 2016, S&L purchased Coca-Cola common shares for $775,000 and sold the shares on January 3, 2017, for $779,500. At December 31, the shares had a fair value of $771,500. When it purchased the Coca-Cola shares, S&L Financial decided to elect the fair value option for this investment.

What pretax amounts did S&L include in its 2016 and 2017 earnings as a result of this investment

I know 2016 is a Loss- 3,500

2017 is a Gain-

I can not figure out the 2017 gain.