In sales, there is a field named subtotal which holds the value of total amount of all products in line items 'order_line'.

In sale order Qweb report,

Consider if I'm having 12 products showing in first page of my Qweb costing for say 12000, and 6 products in second page of my Qweb costing for say 8000,

I need to print at the end of first page subtotal = 12000 and at the end of second page subtotal = 8000.

Kindly help me to solve this!

Thanks in advance!