Simplify the following text for a Grade 8 native English-speaking person.
Original: However , the Donington Park leaseholders suffered economic problems resulting in the BRDC signing a 17 year deal with Bernie Ecclestone to hold the British Grand Prix at Silverstone .
Simplified: Then the Donington Park leaseholders ran into economic problems . A new deal with Formula One resulted in a 17 year deal to hold the British Grand Prix at Silverstone .