What is 6.45% of 6400?

We need to find 6.45% of 6400.

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

So 6.45% means 6.45 out of every 100.

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

Divide the percentage by 100:

6.45 ÷ 100 = 0.0645

This means 6.45% = 0.0645

Now multiply the decimal by the number:

0.0645 × 6400 = 412.8

So 6.45% of 6400 = 412.8

You can also think of it as a fraction:

6.45% of 6400 = (6.45/100) × 6400

= (6.45 × 6400) / 100

= 41280 / 100

= 412.8