1. Write the vertical divisor of two numbers according to the standard format of vertical multiplication.

2. Start multiplication, starting from the highest bit, so just look at the single digits first.

Vertical means that each transition number changes from the last transition number, and then the single digits of the last transition number are multiplied by 2. If carry is needed, proceed to 1, then increase the unit number by ten digits, and so on, and add the new operand to the unit number.