An easy way to get a rough estimate of block rewards is to decide what the projected kUSD market cap growth will be over a certain period. Then divide the number of mining tokens the node is mining by the total number of tokens all nodes are mining (the total number of available mining tokens is 1,073,741,824). For example, if the market cap for kUSD increases by $3B over 12 months and, during this time, you mine with 30,000 mUSD, you would receive approximately 83,819 kUSD in block rewards.