Billy Ltd owns all the share capital of Subsidiary Ltd. On 1 January 2018, Subsidiary Ltd borrows $23 000 from Billy Ltd with an interest rate of 8% p.a., payable quarterly on 1 April, 1 July, 1 October and 1 January each year.

Required What is the amount of adjustment required for the consolidated interest payable when preparing the consolidated financial statements at 30 June 2018? (Please provide a numerical value without a sign ($, + or -) punctuation, or space.)