During an experiment, a signal from a spaceship reached the ground

During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3 × 108 ms-1.

Given that, Speed = 3 × 108 m/s
Time taken = 5 × 60 s = 300 s
We know that Distance = Speed × Time
= 3 × 108 m/s × 300 s
→ Distance = 900 × 108 m = 9 ×1011 m