It is simplified more 0 at the start of the hash.

In binary you code 2^x. 1 means you count it, 0 means you don't

10011

Would be

1*2^4+1*2^1+1*2^0=16+2+1=19

00011 is only 3

The hash found in mining is HEX. So you just take 16 as base (hexadecimal) and multiply with 0-9 and letters a-f for 10-15

2F0=2*16^2+15*16^1=512+255=767

00F=15

Hope this helps to understand 😅

There are 10 kinds of people that understand binary. Those who do, and those who don't