(y+1/x)^(x+y)*(x-1/y)^(x+y)÷{(x^2-1 /y^2)^x*(y^2-1/x^2)^y}

The ivring berlin learning center would like a possible net profit of $650,000 on its new resource manual it sells to schools. the fixed costs for producing the manual are $780,000 and the variable cost per package is $19.85. if the estimated unit sales are 1,250,000 units, what selling price unit should the ivring berlin learning center try?