Seven thousand five hundred
When written as 7500k it means 7500 thousand (7,500,000). It isn't common to see the number 7500 with a k after it. It is more common to see two digits with the K, such as 75k (75,000).
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If you are trying to spell musician that is how you spell it.
You spell it 'certain'.
Seven thousand five hundred
You can write 7500 either as "seven thousand five hundred" or as "seventy-five hundred."
300040% of 7500= 40% * 7500= 0.40 * 7500= 3000
1.75% of 7500= 1.75% * 7500= 0.0175 * 7500= 131.25
12% of 7500= 12% * 7500= 0.12 * 7500= 900
3% of 7500 = 3% * 7500 = 0.03 * 7500 = 225
67% of 7500 = 67% * 7500 = 0.67 * 7500 = 5025
7500
13.34% of 7500= 13.34% x 7500= 0.1334 x 7500= 1000.5
7500
7500
25% of 7500= 25% * 7500= 0.25 * 7500= 1875