Where does “supputans” come from?

supputans (Latin) comes from Latin supputo, from Latin putō, from Latin putus, from Proto-Indo-European puHtós, from Proto-Indo-European pewH- — to be clean, pure.

Definitions

Ancestry of “supputans”, step by step

Step	Language	Word	Meaning
1	Latin	supputo	I prune, lop or trim; I reckon or compute
2	Latin	putō	to clean, cleanse
3	Latin	putus	pure; a boy
4	Proto-Indo-European	puHtós	pure, clean
5	Proto-Indo-European	pewH-	to be clean, pure

Every word from Proto-Indo-European pewH- →Every word from Proto-Indo-European puHtós →Every word from Latin putus →