Solution:

The vertical calculation of 406×234 is as follows:

406

× 234

—————

1624

12 18

8 12

——————

95004

In the process of vertical multiplication calculation, the vertical calculation of column A makes the calculation process easier. Pay attention to the alignment of numbers, otherwise it will increase the error. Multiplication is addition and division is subtraction. Don't be confused. In the calculation of vertical multiplication, every bit of one number is multiplied by every bit of another number, and the I-th bit of one factor is multiplied by the J-th bit of another factor, and the product is I+j-6544.

For example: 505×505

505

× 505

——————

2525

0000

2525

—————

255025

Note that the figures must be aligned, otherwise they will be added incorrectly. In this 505×505 vertical calculation, if the numbers are not aligned, they will be added incorrectly.