As Expected, Yoo Arin Makes Kids Cry

From that day on, Arin began an intensive training regimen based on the mental arithmetic techniques I’d taught her.

“Ninety-seven times ninety-six is… They’re three and four short of 100, so 93 and 12! 9,312!”

“Correct! Next, 6,428 times 3,156!”

“If I split them up and add… 20,286,768!”

“Wow, our daughter’s really fast…”

Dad shook his head in amazement, stopwatch in hand.

Arin practiced the techniques I’d taught her for hours every day.

She warmed up with cross multiplication, chose between Nikhilam and the quarter-square method as soon as she saw the numbers, and ran the Karatsuba algorithm in her head whenever a large number came up.

Arin had been called a human calculator from the start.

Even with just her natural ability, no one could compete with her...