part a is not $666,240

This year, Sigma, Incorporated generated $633,000 income from its routine business operations. In addition, the corporation sold the following assets, all of which were held for more than 12 months: "Through date of sale. Required: a. Compute Sigma's taxable income assuming that it used the straight-line method to calculate depreciation on the bullding and has no nonrecaptured Section 1231 losses. b. Recompute taxable income assuming that Sigma sold the securities for $186,400 rather than $85,250. Complete this question by entering your answers in the tabs below. Compute Sigma's taxable income assuming that it used the straight-line method to calculate depreciation on the building and has no nonrecaptured Section 1231 losses