See here: http://ja0hxv.calico.jp/pai/epivalue.html
525
there are8 0s
648
well the first 9 digit number is 100 million 100,000,000 the last 9 digit number is 999 million 999,999,999 just minus the two numbers and you get... 899,999,999 so there are around 900 million 9 digit numbers.
6
You can get up to 100 million digits here:http://pi.is.online.fr/
9 digits
Ten digits.
250 million = 250,000,000. There are 9 digits in this number.
7 digits.
Eight Digits: 30,000,000
There are 8 digits in 65,600,000
100,000,000 = nine digits.
100, 000, 000
200,000,000 9 digits.
192 digits