Simple math question, let's say he earn 2.5 per bowl of mee sold... we will need to sell 4000 bowl. And let's say one is super fast at food preparation using only 1 mins to prepare a bowl of noodle... that is like 4000min or 66+ hours.

So in short.. he is not a hawker but more likely a restaurant owner or a franchisee with a team of people cooking. Or the news might be wrong and it is not 1 day earning but 1 week or 1 month?