Why do miners search for a block for a long time?

Question

Cryptocurrency

Why do miners with huge computing power of pools take a long time to calculate the hash of a bitcoin block?
The size of the new block, as I understand it, is not very large.

Or do they not calculate the hash?
What I don't understand.

Answer 1

It takes a long time to calculate the hash of the new block due to the fact that this is how it is intended.
The more powerful the network, the more difficult the task is given.
If the network suddenly becomes weaker, and a new block appears more slowly than it should, the task becomes easier.
The task in the same bitcoin comes down to finding a number, the addition of which to the block makes its hash such that at the beginning it has a certain number of zeros (or something similar)
Naturally, the more zeros, the fewer such hashes, the lower the chance that when checking the next number you will find just such a hash.