i need help calculating cost per increase in damage for different quality weapons.

Day 2,498, 13:13 Published in USA USA by ComputerSpeaker

so i am goinjg to assume military rank and strength stay the same and only changing weps is what influences damage.

so i am confused because weps have different durability and fire power.

i assumed i could take the cost divide it by the durability and they divide that by the firepower.

so it would be a number usd/(firepower* durability)

using this number to find the most effective weapon in terms of cost to increased damage.
cost of wep- -FP- -durability- -usd/(FP* durability)
0.02 - - - - - 20 - - -1- - - - .01
0.08 - - - - - 40 - - -2- - - - .01
0.13 - - - - - 60 - - -3- - - - .0072
0.29 - - - - - 80 - - -4- - - - .009
0.85 - - - - -100 - - -5- - - - .017
2.08 - - - - -120 - - -6- - - - .028
6.10 - - - - -200 - - 10- - - - .031
(how do i formate this, in the editor it is spaced nicely but when i publish the article it losses all the spaces 🙁 )


so it seems to me if i had limited funds fighting with a q3 wep will increase my damage the most per usd if i could afford weps.

or if i have to factor in food does that change this significantly?