EXPORT Value under GST

Dear Experts,

Kindly provide clarification for following export invoice valuation, for GST and Shipping bill matching.

Example:

GST Rate : 18% - USD rate considered Rs 70

FOB Value of Goods : $ 10,000 or INR 7,00,000
Export Freight            : $ 2,000 or INR 1,40,000
C&F Value of Invoice: $ 12,000 or INR 8,40,000

In This Case, what will be 

(1) Taxable Value :

(2) Invoice Value :

(3) Tax Value :

Thanks in advance.