Example
https://etherscan.io/block/15856191

Block Reward:
0.064949216109325952 Ether (0 + 0.327007168804960212 - 0.26205795269563426)

Burnt Fees:
🔥 0.26205795269563426 Ether

The number of coins burned cannot be more than the reward of the validator, otherwise the validator will have to pay for it. Reward is the final reward of the validators minus the coins that will be burned. At the beginning it is difficult to understand, but you need to look for more detailed information on each block.