m = mass of the object lifted by you = 14 kg
g = acceleration due to gravity by earth on the object being lifted = 9.8 m/s²
h = height to which the object is lifted slowly = 0.80 m
W = Work done in lifting the object
work done in lifting the object is same as the gravitational potential energy gained by the object. hence
Work done = Gravitation potential energy of object
W = m g h
inserting the values
W = (14) (9.8) (0.80)
W = 109.8 J