🔸 Bottle size = 700ml
🔸 Standard shot = 25ml
🔸 Shots per bottle:
700 / 25 = 28 shots
🔸 Partial bottle calculation:
partial × 28 = estimated shots
🔸 Per-shot price:
bottle price ÷ 28
🔸 Final formula:
(full bottles × bottle price) +
(shots × per-shot price)