Three under five divided by two

Three under five divided by two

Three under five divided by two is a Chinese idiom, originally one of abacus formula. It is a new kind of network irony, which is different from ordinary people.

The origin of Idioms

Abacus is an effective calculation tool in ancient China, its function is equivalent to the calculator in modern society. "Three under five divided by two" is one of the most basic addition formulas in abacus. In ancient times, with the help of a simple and easy to remember formula, people can carry out a series of operations on the abacus. Therefore, the basic formula "three under five divided by two" has the meaning of "fast and fast", which means to finish a thing cleanly. in terms of abacus operation, it is a formula in addition: it means that when there are two or more beads on the bottom of the abacus, three beads are added. In operation, one bead should be removed from the top and two beads should be removed from the bottom. That is to say, add five and then subtract two. This word is not a division in normal operation, but the meaning of removal, that is, 3 = 5-2. For example, 4 + 3, set down 5, and then remove 2 from the bottom 4 to get 7 (in the abacus, an abacus in the upper level is 5, and each bead in the lower level is 1.)

The origin of irony

One day, a Cowman suddenly found that the calculation result is equal to 1.2, that is: a little bit two. The specific expression is "3" as the molecule, "5 △ 2" as the denominator, and the final calculation result is 3 △ 2.5 = 1.2. Please refer to the picture example.