Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter.( I$ B/ J) D w; W7 H3 x& K, C" C
2 t8 M8 G2 v& E" @8 k/ d' d
This is just rough idea.