Normally, stairway $5.00 per step, floor $5.00 per sqaure yard. As the carpeter itself depening the quality you like. Also, for the floor footage, you need add roughly 10% extra as you need to cut and through some carpeter.% P8 r' C* T: R% T$ ~
, {+ L4 C. S- l% j/ K* o( a* VThis is just rough idea.