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Definition of numerical:
Synonyms:
differential, numeric, fractional, mathematical, logarithmic, denotative, quantitative, nonverbal, denotive, numeral, binary, exponential, exponential.

calculational (part of speech: adjective)
 algorithmic,
 statistical,
 computational,
 suppositional,
 valuational,
 algebraic,
 approximate,
 methodical,
 rational,
 systematical,
 mathematical,
 geometric,
 proportional,
 arithmetic,
 calculational,
 judgmental
 numeric (part of speech: adjective)
Usage examples:

One is indeed quickly struck by their numerical weakness.
 "A Wanderer in Paris", E. V. Lucas. 
The Red Cross relief boats made a complete and accurate list of the Spanish prizes in the harbor, twenty two in all, with the numerical strength of every crew, the amount of provisions, if any, on every vessel, and the quantity and kind of food that each would require.
 "Campaigning in Cuba", George Kennan. 
Not for months, therefore, was it permitted the world to know anything about the numerical strength of the American troops sent into France.
 "Kelly Miller's History of the World War for Human Rights", Kelly Miller.