Each pouch of Huel White contains 6800kcal according to Kelp removal in v3.0 Powder and changes to pouch size - information on a steady roll out
365 days/year × 2000 kcal/day = 730000 kcal/year
730000 kcal/year ÷ 6800 kcal/pouch = 107.35 pouches
Hence it would be 108 pouches, not 53 pouches. I know because I eat 2000kcal of Huel every day.