In this field, the results of any mathematical operation (addition, subtraction, multiplication, or division) is reduced modulo 13; that is, multiples of 13 are added or subtracted until the result is brought within the range 0–12.
Ring bidang puniki, pikolih operasi matematika napi manten (penjumlahan, pengurangan, perkalian, utawi pembagian) kakirangin modulo 13; inggih punika, kelipatan 13 kawewehang utawi kakirangang nyantos pikolihnyané wénten ring pantaraning 0–12.