704 divided by 5 equals 140, and the remainder is 4. The mathematical formula is 704÷5= 140...4, and the vertical division operation is shown in the following figure.

Vertical calculation method

Addition: the same number is aligned. If the sum exceeds 10, proceed to 1. (The numbers should be aligned. )

Subtraction: Same number alignment. If it is not enough, borrow 1 from the last digit as 10.

Multiplication: the 1 bit of one number is multiplied by the 1 bit of another number and added to the i+j- 1 bit of the product.

Division: When calculating division vertically, start from most significant bit. If it is not divisible, then most significant bit and the next digit are combined into a number for division until the divisor can be divided.