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Convert the binary number $110100010_2$ to its decimal form.
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Begin by counting the number of digits in the binary number. There are nine.

•  Write down the first nine powers of 2, including 1 for the units.
• Place 1 and 0 in their correct positions.
• Now, write down the sum of the powers of 2 and add them to get the decimal form:

$256 + 128 + 32 + 2 = 418$

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