How would this be completed? Please show all work

1. Downblending HEU to create HALEU has been done in the past, but most HEU was downblended into LEU. a) How much HALEU (in tons) could have been created using the entire 180t of HEU supply? Assume 93% enrichment for HEU, mixed with 3% LEU to produce 19.75% for HALEU. b) How long could this have fueled HALEU reactors at the tons of HALEU per year projected for 2030