A tugboat pulls a ship with a constant net

horizontal force of 4.80 × 10^3N and causes the ship to move through a harbor. How much work does the tugboat do on the ship if each moves a distance of 4.24 km ?

Answer in units of J

Thanks so much! I'm actually in 11th grade with a B, but I just couldn't understand how to do it. I did, though, have to change it to 2.04E7 as its the only was the UT would take it. No worries, though, it was right! Thanks again, so much!