The bottom of ignacio's desktop is 74.5\,\text{cm}74.5cm74, point, 5, space, c, m from the floor. ignacio sits in his adjustable chair, and the tops of his legs are 49.3\,\text{cm}49.3cm49, point, 3, space, c, m from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8\,\text{cm}4.8cm4, point, 8, space, c, m.
write an inequality to determine the number of clockwise rotations, rrr, ignacio could make with the knob without his legs touching the desk.