The answer would be word-processing program. The other choices are an example of hardware devices.
Divide 268 by 2, keeping notice of the quotient and the remainder. You will have to keep dividing the quotient by 2 until you get a quotient of zero as shown below:
Writing out the remainder from bottom to top will give 100001100.
Multiply the decimal 0.75 by 2 and keep noting down by integer values as shown:
The equivalent binary for 0.75 will be 0.11.
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I assume you are talking about Excel?. You first--enter your initial date on the first cell and click the cell with the first date to select it, then drag the fill handle.