What is the formula of finger speed algorithm?

The formula is: index finger extends 1, middle finger extends "2", ring finger extends "3" and little finger extends "4"; Four fingers and a thumb, the thumb is "5" to remember; Then extend the index finger to the little finger, and "6", "7", "8" and "9" are arranged in numbers.

How to use the formula: first determine the division of labor between hands: the left hand represents ten digits, and the right hand represents single digits. The formula is: I have a pair of hands, representing ninety-nine; Set the left hand to ten, and I can count to ninety; Pose with your right hand and count from one to nine. Then determine the finger division of labor: the thumb represents the number 5; Fingers other than the thumb are called "group fingers", each representing the number1; Then one hand adds up to the number 9; Making a fist represents the number 0.

Practice the formula with your right finger:

Take the lead, two tigers contend, in a few words, the four seas are at home, and the grain is abundant.

Six animals are thriving, and the eight immortals are crossing the sea, and nine Niu Yi hairs are urgent.

It's a deal, the two dragons play with pearls, and the three pillars are divided, surrounded by enemies, and the grain is abundant.

Six gods without a master, seven ups and downs, exquisite, nine Niu Yi hairs, perfect.

(Note: When reading "urgent" or "perfect", make a fist with your right hand and give "1" with your left hand, indicating carry. )

The left hand points to the formula: ten, twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety, one hundred.