Vaughn Corporation purchased a tract of unimproved land for $$565,000.$ This land was improved and subdivided into building lots at an additional cost of $$124,000.$ These building lots were all of the same size but owing to differences in location were offered for sale at different prices as follows:

$\backslash$table$[[$Group$,$No$.$ of Lots,Price per Lot$],[1,21,$$$26,800$

At the end of the fiscal year Vaughn Corporation instructs you to arrive at the net income realized on this operation to date.