Operating calculator
Palabras clave
electronic,
calculating machine,
buttons,
human,
children,
children,
hand,
finger,
holding,
pressing,
pushing,
operating,
using,
calculate,
calculation,
mathematic,
summing,
subtract,
multiply,
divide,
number,
figure,
learn,
learning,
education,
object,
technology,
solar,
cell,
battery,
energy,
power,
school,
business,
isolated,
cut-out,
cut,
out,
white,
background
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