In the even number series of 2, 4, 6.396 and 398, how many digits are there in total

In the even number series of 2, 4, 6.396 and 398, how many digits are there in total

There are 2 places in total: 30
Two out of ten: 30
There are 2 in 100,
A total of 100 + 30 + 30 = 160