A 69.0 firefighter climbs a flight of stairs 22.0 high.

Question

How much work is required?

Answer 1

I assume you mean 69 kg
and
22 meters

If so
69*9.8 = 676 Newtons

work = force * distance = 676*22 = 14,876 Joules

You left the units off, which tells me you better pay more attention to the basics of this subject.

Answer 2

88.2

Answer 3

28£ ndn