Complex sentence: The net worth of the estate was more than £250,000 (approx. £18,000,000 as of 2010), a figure that continued to grow despite Elwes' inept handling of his finances.
Split into simpler sentences: The net worth of the estate was more than £250,000 (approx. £18,000,000 as of 2010). A figure that continued to grow despite Elwes's inept handling of his finances.