Complex sentence: He won the 1977 British Formula Three Championship, and competed as a professional racing driver for 17 years participating in 64 Formula One grands prix, debuting on April 2,1978.
Split into simpler sentences: He won the 1977 British Formula Three Championship. He competed as a professional race car driver for 17 years participating in 64 Formula One grands prix, debuting on April 2,1978.