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Schlüsselwörter
calculating machine,
mathematic,
calculation,
tool,
icon,
simple,
black,
white,
buttons,
screen,
display,
number,
key,
equal,
enter,
mathematical,
arithmetic,
digital,
device,
contraption,
technology,
computing,
finance,
education,
office,
work,
school,
student,
teacher,
engineer
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