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Messages per hour

Mental mathMedium

A gateway processes $12000$ messages every second without pause. How many messages is that per hour, counted in blocks of $1000000$ messages? Give a decimal.

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Hint

Multiply by $3600$ and shift the decimal.

Solution

One hour has $3600$ seconds.
$12000 \times 3600 = 12 \times 36 \times 100000 = 432 \times 100000$ .
So the total is $43200000$ messages.
In blocks of $1000000$ that is $43.2$ .

Answer: $43.2$

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