Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.90×10^6 N, one at an angle 17.0 degrees west of north, and the other at an angle 17.0 degrees east of north, as they pull the tanker a distance 0.700km toward the north.
What is the total work done by the two tugboats on the supertanker?