The mass of Jupiter is 1.898 × 1027 kilograms, and the mass of Saturn is 5.68 × 1026 kilograms. How much greater is Jupiter's mass than Saturn's mass?

3878.434 is the answer you are looking for.

Masse Jupiter = 1.898 x 10²⁷   OR 18.98 x 10²⁶ Mass Saturn = 5.68 x 10²⁶ Difference of Masses = Jupiter - Saturne  OR 1.898 x 10²⁷ - 5.68 x 10²⁶ In order to be able to proceed to the subtraction, both exponents of 10 should be equal, the Mass of Jupiter 1.898 x 10²⁷   OR 18.98 x 10²⁶ Now 18.98 x 10²⁶ - 53.68 x 10²⁶ ==> (18.98 - 5.68) x 10²⁶ ===> Masses = Jupiter - Saturne  = 13.3 x 10²⁶  OR 1.33 x 10²⁷