Please help with the discount factor estimation please, thanks

5. [5 points] 3-month Futures is another liquid instrument that we can use to bootstrap a zero curve. Suppose 3-month HIBOR from 21 June 2022 to 21 September 2022 is 3.19\% 3-month HIBOR Futures price for the September contract is 96.75 Futures contract expiry is 21 September 2022 ( 3rd Wednesday of September). Assume the discount factor on 21 June 2022 is 0.9996 . Estimate the discount factor (4 decimal points) on 21 December 2022 (also 3rd Wednesday of December). Assume 365 year basis