need help with this problem:

Aragon makes handheld calculators in two models--basic and professional--and wants to refine its costing system by allocating overhead using departmental rates. The estimated $892,500 of manufacturing overhead has been divided into two cost pools: Assembly Department and Packaging Department. The following data have been compiled: (Click the icon to view the data.) Read the requirements. Compute the predetermined overhead allocation rates using machine hours as the allocation base for the Assembly Department and direct labor hours for the Packaging Department. Begin by selecting the formula to calculate the predetermined overhead (OH) allocation rate. Then enter the amounts to compute the allocation rate for each department. (Abbreviation used: Qty = quantity. Enter the allocation rates to the nearest cent.) Predetermined OH - allocation rate Data Table Assembly Packaging Assembly Department 450,000 $ How much overhead is allocated to the basic model? To the professional model? Packaging Department 442,500 $ Total Overhead costs $ 892,500 Begin by selecting the formula to allocate overhead (OH) costs. (Abbreviation used: Qty = quantity.) Machine hours: Allocated mfg. overhead costs Basic Model 130,500 MHr 119,500 MHT 19,500 MHr 255,500 MHr 150,000 MHT 375,000 MHr Compute the total overhead allocated to the basic model, and then compute the total overhead allocated to the professional model. Professional Model 275,000 MHr Professional Model 250,000 MHr Total Basic Model 525,000 MHr Manufacturing overhead-Assembly Direct labor hours: Manufacturing overhead-Packaging Basic Model 50,000 DLHr 121,875 DLHO 65,000 DLHO 488,125 DLHO 115,000 DLHO 610,000 DLHO Total manufacturing overhead cost Professional Model 171,875 DLHO 553,125 DLHO 725,000 DLHr Total