1 [countable usually plural, uncountable] when you use numbers in order to find out an amount, price, or value
by somebody's/some/many calculations
By some calculations, the population will reach 8 million soon.
By some calculations, the population will reach 8 million soon.2 [uncountable and countable] careful planning in order to get what you want, especially without caring about the effects on other people [↪ miscalculation]:
political calculation
political calculation3 [uncountable] when you think carefully about what the probable results will be if you do something [↪ miscalculation]

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