if possible, as far as possible

I use the stairs as far as possible.

私はなるべく階段を利用します

I use the stairs as far as possible when I come to work.

私は出勤するときなるべく階段を利用します

I use the stairs as far as possible at the company when I come to work.

私は出勤するとき会社でなるべく階段を利用します

I use the stairs as far as possible at the company with my coworker when I come to work.

私は出勤するとき会社で同僚と一緒になるべく階段を利用します

I use the stairs as far as possible up to the fifth floor at the company with my coworker when I come to work.

私は出勤するとき会社で同僚と一緒に五階までなるべく階段を利用します