Robles & Co is a VAT-registered business. During the quarter just ended, it bought goods and services to the value of £51,690 excluding VAT, and its sales were £81,906 including VAT. All of the business’s sales are subject to VAT at 20%. However, only two-thirds of the goods and services it buys are subject to VAT at 20%. The other third are either zero-rated or exempt.

After preparing its VAT return for the quarter just ended, how much must the business pay to HMRC?