11. John sold an apartment building for $600,000. His basis in the building was $360,000 and it was subject to $30,000 of depreciation recapture. John received $150,000 in the year of sale, the buyer assumed John's mortgage payable of $240,000, and the buyer gave John an 8% (the current Federal rate) note of $210,000 due in 5 years. The interest on the note was payable each June 30, beginning in the year following the year of the sale. John incurred $30,000 of selling expenses which he paid in the year of sale. Compute John's installment sales gain that should be reported in the year of sale