Senior Yan was not familiar with numbers like "1234," but there were small notes beside the numbers.
On these notes, the "one, two, three, four," which he did recognize, and the "plus, minus, times, divide" were not unfamiliar to him.
The reason why this calculator was a gift was that Arabic numerals did not exist in this plane. Feng Jun could "seal script" all textual items, but he could not do the same for all the numbers.
So he gifted the Pan family ten calculators. Such a small gift was inexpensive and beneficial, not only helping the other party quickly understand Arabic numerals but also maintaining a good relationship with his clients.
Senior Yan tested it and found the device to be indeed very useful. Originally known for his computational prowess, his mental calculation ability was extremely strong, yet this calculator was scarcely weaker than him when it came to large numerical computations.
