Where does this definition of to miscalculate on an abacus come from?
This entry for to miscalculate on an abacus is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.
