I
счесть v.
reckon, consider, regard, suppose, assume; считат доказанным, take for granted, assume; мы считаем x = 1, we take, x = 1 (or suppose x = 1)
II
perf. of считывать v.
read, read out; compare, collate
II
сосчитать v.
count, add up, compute, reckon