how do i do this im lost. solve step by step with explanation

Drew implements makes four models of utility and light construction tractors, The model names are DI-1400, DI-3800, DI-5000, and DI8000. Drew manufactures the tractors in two departments-Fabrication and Detailing. All four models are processed initially in Fabrication, where all material is assembled into the basic tractor. The DI- 1400 model is then transferred to finished goods. After processing in Fabrication, the other three models are transferred to Detailing for additional work (though no new materlals are added) and then transferred to finished goods. There were no beginning work-in-process inventories on February 1. Data for February are shown in the following table. Ending work in process is 90 percent complete in Fabrication and 40 percent complete in Detailing. Conversion costs are allocated based on the number of equivalent units processed in each department. Required: o. What is the unit cost of each model transferred to finished goods in February? b. What is the balance of the Work-in-Process inventory on February 28 for Fabrication? For Detalling? What is the unit cost of each model transferred to finished goods in February? What is the balance of the Work-in-Process Inventory on February 28 for Fabrication? For Detalling? Complete this question by entering your answers in the tabs below. What is the unit cost of each model transferred to finished goods in February? Required: a. What is the unit cost of each model transferred to finished goods in February? b. What is the balance of the Work-in-Process Inventory on February 28 for Fabrication? For Detailing? Complete this question by entering your answers in the tabs below. What is the balance of the Work-in-Process Inventory on February 28 for Fabrication? For Detailing