old abacus and hand on wooden background
Schlüsselwörter
abacus,
calculating machine,
china,
vintage,
wood,
work,
accounting,
summing,
arithmetic,
asia,
bar,
bead,
black,
calculation,
compute,
computer,
count,
economic,
economy,
finance,
financial,
frame,
hand,
learning,
mathematic,
mathematical,
mathematic,
number,
numeric,
object,
office,
old,
retro,
revival,
row,
school,
subtraction,
sum,
tool,
trade,
traditional
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