ObsidianJournal/Freelance/OAP/OAP PayPal calculations errors.md

Total	Actual fee	Net	Expected Net	Actual percentage
103.2	3.29	99.91	100	(3.29 - .3) / 100 = 0.0299 * 100 = 2.99	103.2*0.029 + .3 = 3.2928
499.29	14.78	484.51	484.93	(14.78-.3) / 484.93 = 0.0299 * 100 = 2.99	499.29*.029+.3 = 14.7794
550.74	16.27	534.47	534.93	(16.27 -.3) / 534.93 = 0.0299 * 100 = 2.99	550.74*.029+.3=16.2715

We are sending a payment of 103.20 to paypal which is what they then use to make the 2.9% + $0.30 fee calculation instead of basing it off of $100. So, the fee ends up being $3.29 instead of $3.20.

We need a better formula:

A * 0.029 + 0.3 = B

A - B = C
A = C + B

C = 100

(C + B)*0.029 + 0.3 = B
0.029C + 0.029B + 0.3 = B
0.029C + 0.3 = B-0.029B
0.029C + 0.3 = 0.971B
B = (0.029C + 0.3)/0.971

0.029*100 + 0.3 = 3.2
3.2/(1-0.029) = 3.2956