how frequently does the letter 4 appear in:
a teesside university lecturer has beaten the mens and womens world records for the distance covered running on a treadmill in seven days.
sharon gayter, from guisborough, ran a total of 517.3 miles (832.5 km) in seven days.
according to guinness world records, the previous record holders were lee chamberlain who ran 468 miles (753.24km) in july 2009 and a grandmother from kent, mimi anderson, who ran 650km (404 miles).
the 48-year-old beat the world records on tuesday but continued to run until she had completed the full seven days.
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I found five "4"s in the provided passage.
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