400
Fattoom is on the way to the masjid for Dhuhr and Asr prayers but there is a of traffic on the way plus the bridge opens, and a herd of llamas passes in front of her car, and she is late. Surprisingly she makes good time, and when she arrives at the masjid, the congregation is on the second rakat of Dhuhr prayers still reading surah al Iklas. Assuming she has wudhu and reads her prayer full (not as a traveler), how should Fattoom read her prayers, alone or with the congregation? If with the congregation, how does she do so properly?
Answer to be judged by teacher.