The problem asks us to find what percentage $1,800,000 is of $9,000,000. We need to express the answer using a percent sign.

1. Problem Description

The problem asks us to find what percentage $1,800,000 is of$9,000,

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0. We need to express the answer using a percent sign.

2. Solution Steps

To find what percentage one number is of another, we divide the first number by the second number and then multiply by 100 to convert the result to a percentage.

In this case, we need to calculate $\frac{1,800,000}{9,000,000} \times 100$.

$\frac{1,800,000}{9,000,000} = \frac{1,8}{9} = \frac{18}{90} = \frac{1}{5}$

Now, multiply by 100:

$\frac{1}{5} \times 100 = \frac{100}{5} = 20$

So, $1,800,000 is 20$9,000,

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3. Final Answer

20%