One way: You work your way up with your solfege.(like just going sol, la, ti, do all the way up to the next note)
Sencond way: you could start counting (numbers) from the space the first note is in all the way up to the next note. You'll notice it's just 8 and knowing that the solfege scale is by 8ths and so if you start on sol and its 4 lines and 4 spaces (incuding the starting space) then you will end on sol just it's an octave higher.
Answer: Originally written for piano four hands, the Slavonic Dances were inspired by Johannes Brahms's own Hungarian Dances and were orchestrated at the request of Dvořák's publisher soon after composition.
