The phrase "reckons on" means to expect or anticipate something. There are various synonyms for this phrase, such as "calculates," "envisages," "foresees," "predicts," or "anticipates." Each of these words carries a slightly different connotation. For example, "calculates" suggests a more analytical approach, while "envisages" implies a more visual and imaginative approach. "Foresees" emphasizes the idea of predicting future events, while "predicts" is more straightforward and factual. "Anticipates" is a more general term that encompasses all of these meanings. Regardless of which synonym is used, the underlying idea of expecting or planning for something remains the same.