Estimate 18% of $4.5M in your head - what's the talk-through?

How to answer

I build from clean anchors: 10% of $4.5M is $450K, 5% is half that ($225K), so 15% is $675K. 1% is $45K, so 3% is $135K. Adding gives 18% = $810K exactly. In the room I'd narrate the steps and say '~$800K' while noting the rounding.

Key idea: Going silent to grind exact arithmetic - interviewers want to hear the structured estimation, not perfect digits.