Saturn’s rings span up to about (7.5 · 10-1) of the distance between the earth and its moons. if saturn’s rings span up to (2.82 · 105 kilometers, what is the distance between earth and its moons. 3.76 · 105 km 21,150 km 21.15 · 104 km 2.115 · 105 km

2.82 × 10^5 = (7.5×10^-1) × Length between the earth and the moon
Length between the earth and the moon = (2.82×10^5)÷(7.5×10^-1)                                                                     = 376000                                                                     = 3.76×10^5
i think this is correct hope it helps. 

When we rewrite this one we can change to (7.5 *2.82) x (10^-1 * 10^5).
If we multiply both equations the price is (21.15) and (10^-4).