What is 0.21% of 102400?

We need to find 0.21% of 102400.

The word "percent" means "per hundred" or "out of 100".

So 0.21% means 0.21 out of every 100.

To calculate with percentages, we first convert to a decimal.

Divide the percentage by 100:

0.21 ÷ 100 = 0.0021

This means 0.21% = 0.0021

Now multiply the decimal by the number:

0.0021 × 102400 = 215.04

So 0.21% of 102400 = 215.04

You can also think of it as a fraction:

0.21% of 102400 = (0.21/100) × 102400

= (0.21 × 102400) / 100

= 21504 / 100

= 215.04