Two.
Two. Foot-steps
Generally there are 13 steps per floor.
5
Four half steps, or two whole steps.
two hours
About two or three hours.
Two hours
17,531.6255 hours
Two hours
If Lawrence walked twelve miles in six hours, he was walking two miles per hour. In 30 minutes he would have walked one mile.
The two units are incompatible - different people have different length steps.