Passage: In his Test career, he scored 8,540 runs in 121 Test matches at an average of 50.23 (including 24 centuries). Richards also scored 5 centuries in World Series Cricket between 1977–79. These are not recognised by the ICC as "official" Test centuries. Richards won 27 of 50 matches as a Test captain, and lost only 8. He is also the scorer of the equal second fastest-ever Test century, from just 56 balls against England in Antigua during the 1986 tour. He hit 84 sixes in Test cricket. His highest innings of 291 is equal seventh (along with Ramnaresh Sarwan) on the list of West Indies' highest individual scores.

Question: How many runs did he score in his career?
8,540