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