No.
325000 = 3.25 × 10^5
It is 325000.
325000*45/100 = 146250
5000/325000 = 1/65
You write it as 325000, exactly as in the question/
325000 micrometers
It is: 4% of 325,000 = 13,000
325000
3.25x105
3% of 325,000 is 9,750.
32.5
4.25% * 325 000 = 13812.5