Please help me understand the map quantity calculation given this example

My example map has 75% total quantity coming from 4 modifiers that combine for 55% quantity plus 20% from quality. When placed in the map device with the default 8% added quantity option, it yields 133% increased quantity.

My atlas tree has a combined 73% increased effect of explicit modifiers, which is verified by checking the increase in the extra physical damage as fire mod (97% x 1.73 = 167.81). I assume the final value is truncated.

The atlas tree has an additional 12% quantity added.

Using the included images, please show me the explicit calculation for how my 75% quantity map becomes 133% quantity percent when run.


https://imgur.com/a/2h6pHfC