“精于计算的人”可以用英语表达为 “a person skilled in calculations” 或 “a calculator expert”(不过“calculator expert”更侧重于对计算器操作精通的人,严格意义上不完全等同于“精于计算的人”,但有时也可根据语境使用) ,更准确且常用的表达是 “a master of calculations” 或者 “someone proficient in calculations” 。
例如:
He is a master of calculations, always getting the right answers quickly.(他精于计算,总能迅速得出正确答案。)
She is someone proficient in calculations, which helps her a lot in her financial work.(她精于计算,这在她财务工作中帮了她大忙。)