The units of Manganese Plus available for sale during the vear were as follows: Mar. 1 Inventory 23 units $29 $667 Purchase June 16 30 units e $30 900 Nov. 28 Purchase o $39 43 units 1,677 96 units $3,244 There are 12 units of the product in the physical inventory at November 30. The periodic inventory system is used. Determine the difference in gross profit between the LIFO and FIFO inventory cost systems. Enter the answer as a positive number