Please help me I am stuck with this question
William Plastics selected data for the month of August 2004 are

work in process inventory 8/1/2004 $200 million
direct materials inventory 8/1/2004 $90 million
direct materials purchased $360 million
direct materials used $375 million
variable manufacturing overhead $250 million
total manufacturing overhead $480 million
total manufacturing costs $1600 million
cost of goods manufactured $1650 million
cost of goods sold $1700 million
finished goods inventory $125 million

calculate the following costs
a. direct materials inventory 8/31/2004
b. fixed manufacturing overhead costs for august
c. direct manufacturing labour costs for august
d. work in process inventory 8/31/2004
e. goods available for sale in august
f. finished goods inventory 8/31/2004