Where does “pagkatrato” come from?

pagkatrato (Bikol Central) comes from Bikol Central katrato, from Bikol Central trato, from Spanish trato, from Spanish tratar, from Latin tractāre, from Latin tractō, from Latin -tō, from Latin -tus — Derives action nouns from verb roots.

Ancestry of “pagkatrato”, step by step

pagkatrato traces back through two separate lines of ancestry.

via Bikol Central katrato

StepLanguageWordMeaning
1Bikol Centralkatrato—
2Bikol Centraltrato—
3Spanishtratodeal, bargain, agreement; treatment; behaviour
4Spanishtratarto treat; to address, to refer to as; to deal...
5Latintractāre—
6Latintractōto tug, drag or haul
7Latin-tōForms here
8Latin-tusForms the past participle of verbs; Forms...
9Proto-Italic-tus—
10Proto-Indo-European-tusDerives action nouns from verb roots

via Bikol Central pag

StepLanguageWordMeaning
1Bikol Centralpag—
Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Latin -tō →