Supondo-se que OC seja operating cost.

Apenas uma sugestão considerando que OC seja On-Center

The Construction Definition of On-Center (OC) Spacing
The term "on-center," often abbreviated "OC" (or "o.c.)," is commonly used in construction drawings, architectural plans, and woodworking designs. It indicates that the given dimension refers to the distance between the center of one framing member to the center of the next member.

https://www.thesprucecrafts.com/definiton-of-oc-3536547

"I'm struggling to figure out how Magento do that, split the discount amount on each ordered item in case of shopping cart rule having a fixed amount of discount..." https://magento.stackexchange.com/questions/180006/how-magen...

"Three, the $25 discount was split evenly between both items. In that case, you received a 12.5/28.81 ≈ 43.39% discount on the first item and a 12.5/57.99 ≈ 21.56% discount on the second item.
Or, really, you can apply the same principle to split the discount between the two items in any way you like." https://www.reddit.com/r/askmath/comments/a99cut/made_a_purc...

Example Phrase

Pictograma de ilustração da marca de venda
Conceito de efeito de divisão de desconto de melhor preço de promoção
https://pt.dreamstime.com/ícone-do-adesivo-de-desconto-desen...

"PS: Devido à minha agenda atarefada, não poderei dar seguimento a comentários e/ou discussões posteriores. O/A consulente é bem-vindo/a a entrar em contato (via inbox) se precisar de algum esclarecimento. Obrigado.