Show me the steps to solve $18-35$ Porter Handcraft is a manufacturer of picture frames for large retailers. Every picture frame passes through two departments: assembly and finishing. This problem focuses on the assembly department. The process$-$costing system at Porter has a single direct cost category $($direct materials$)$ and a single indirect cost category $($conversion costs$).$ Direct materials are added when the assembly department process is $10\%$ complete. Conversion costs are added evenly during the assembly department's process. Porter uses the weighted$-$average method of process costing. Consider the following data for the assembly department in April: $1$ Degree of completion: direct materials, $100\%$; conversion costs, $40\%.2$ Degree of completion: direct materials, $100\%$; conversion costs, $20\%.$ Prepare a set of summarized journal entries for all April transactions affecting Work$-$in$-$Process$$Assembly$.$ Set up a T$-$account for Work$-$in$-$Process$$Assembly$,$ and post the entries to it$.$

FIFO method.