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Re:A Japanese company cut 80% of the time needed to manually... by joosters on Monday May 24, 2021 @03:33AM (#27261867)
You missed an important part of the article:

...this app not only helps Eiko Pearl to cut 80% of the time needed for counting pearls, but it also helps them reduce 3 months of labor cost.

3 months, not 80 hours.

Re:A Japanese company cut 80% of the time needed to manually... by flukus on Monday May 24, 2021 @03:43AM (#27261927)
It's not really clear where that 3 months figure comes from. Do they have 6 people all saving 2 weeks? And if so do the share the device or is the cost scaling with employees? There's also another part:

> When taking inventory, they had 2 members of the staff counting pearls and it took 2 full days.