The controller of Kingbird Company estimates sales and production for the first four months of 2022 as follows: January February March April Sales $32,700 $41,000 $53,400 $27,300 Production in units 1,100 1,400 2,000 2,700 Sales are 40% cash and 60% on account, and 60% of credit sales are collected in the month of the sale. In the month after the sale, 40% of credit sales are collected. It takes 4 kg of direct materials to produce a finished unit, and direct materials cost $5 per kg. All direct materials purchases are on account, and are paid as follows: 40% in the month of the purchase and 60% the following month. Ending direct materials inventory for each month is 40% of the next month's production needs. January's beginning materials inventory is 1,020 kg. Suppose that both accounts receivable and accounts payable are zero at the beginning of January.