Where does “ruudukkolaskenta” come from?

ruudukkolaskenta (Finnish) comes from Finnish ruudukko, from Finnish ruutu, from Swedish ruta, from Middle Low German rūte, from Old High German rūta, from Latin rūta, from Ancient Greek ῥυτή — rue.

Ancestry of “ruudukkolaskenta”, step by step

ruudukkolaskenta traces back through two separate lines of ancestry.

via Finnish ruudukko

Step	Language	Word	Meaning
1	Finnish	ruudukko	grid
2	Finnish	ruutu	square; rectangle; box
3	Swedish	ruta	square, tile; windowpane; panel
4	Middle Low German	rūte	—
5	Old High German	rūta	—
6	Latin	rūta	rue bitter herb
7	Ancient Greek	ῥυτή	rue

via Finnish laskenta

Step	Language	Word	Meaning
1	Finnish	laskenta	computation, calculation; calculus
2	Finnish	laskea	to lower, drop; to put down, set down, lay down;...
3	Proto-Finnic	laskedak	to drop, to fall; to release; to let, to allow
4	Proto-Uralic	laćke-	—

Every word from Ancient Greek ῥυτή →Every word from Latin rūta →Every word from Old High German rūta →