Cullumber Ltd. estimates sales for the second quarter of 2022 will be as follows.

Month/Units April 2,140

May 2,240

June 2,010

The target ending inventory of finished products is as follows.

March 31 1,680

April 30 1,860

May 31 1,840

June 30 1,950

Two units of materials are required for each unit of finished product. Production for July is estimated at 2,260 units to start building inventory for the fall sales period. Cullumbers policy is to have an inventory of raw materials at the end of each month equal to 50% of the following months production requirements. Raw materials are expected to cost $4 per unit throughout the period. Calculate the May raw materials purchases in dollars. Raw material purchases cost enter the raw material purchases cost in dollars