In October 2007 , Matthew bought a piece of rare porcelain for £10,000. The porcelain was damaged in early 2013 and in March of that year Matthew spent £3,850 on restoration work. In July 201 3, Matthew's insurance company paid him £4,000 and Matthew successfully claimed that this should not be treated as a part disposal. He sold the porcelain in March 2018 for £23,500. Compute the chargeable gain.