Complex sentence: Vorderman's mother noticed a newspaper advertisement asking for a woman with good mathematical skills to appear as co-host on a quiz show for the fledgling fourth terrestrial channel and submitted an application on behalf of her daughter, then aged 21.
Split into simpler sentences: Vorderman's mother noticed a newspaper advertisement asking for a woman with good mathematical skills to appear as co-host on a quiz show for the fledgling fourth terrestrial channel. She submitted an application on behalf of her daughter, then aged 21.