<big>container_multiplier x container_name x product_multiplier x (sub_)product_name x quantity_value x quantity_unit</big>
<big>container_multiplier x container_name x product_multiplier x (sub_)product_name x quantity_value x quantity_unit</big>
+
+
This formula should be valid for each container/subcontainer/subsubcontainer level, but should reflect the entire package. So one has to add multipliers and brackets where appropriate.