Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter.& I* @$ _9 @. j+ C1 w
0 L$ _7 S# ^: i @; Q: a2 ? V
This is just rough idea.