Complex sentence: She helped to expand the number of chapters and chapter locations, as well as increase the number of life members in psi Chi from 25,000 members spread across 130 chapters to 221,573 members from 734 chapters.
Split into simpler sentences: She helped to expand the number of chapters and chapter locations, as well as increase the number of life members. When she arrived Psi Chi had 25,000 members spread across 130 chapters and she expanded it to 221,573 members from 734 chapters.