Reading:

Read level 100 million, then level 10,000, and finally level 1.

The reading methods of 100 million and 10 thousand levels are read according to the reading method of 100 million levels

The zeros at the end of each stage are not read, but one or several zeros in the middle are read.

Number of writes:

Write 100 million first, then 10 thousand, and finally write one.

There is no unit in that number, so it is accounted for by 0.