Betty, a Single Taxpayer with No Dependents, Has the Following

Betty, a single taxpayer with no dependents, has the following gains and losses. Before considering these transactions, she has $45,000 of other taxable income. What is the treatment of the gains and losses and what is Betty's taxable income? $\begin{array}{lr}\S 1245 \text { gain \#1 } & \$ 18,000 \\\S 1245 \text { gain \#2 } & 5,000 \\\text { Business equipment long-term casualty loss } & (8,000) \\\text { Business real property long-term casualty gain } & 12,000 \\\text { § 1231 gain } & 13,000 \\\text { § 1231 lookback loss } & (2,000)\end{array}$