2 divided by 7 in a fraction

First, you divide 2 by 7

2÷7≈.286  [or  .28 if you were less detailed but we will be using .286]

.286 is a decimal. Now you need to convert it to a fraction

is not a real fraction because fractions cannot have decimals

So to turn the decimal into a fraction, move the decimal point to the right three times so that it is a number

.286⇒286.

But what you do to the numerator (top), you must do to the denominator

So you move the decimal point for 1, three times to the right also

1.⇒1000

So now it is

Now you need to reduce it. To reduce, you must find a common factor for both the numerator and denominator

2 is a common factor

÷ =

Your answer is

If on the other hand you used the less detailed decimal .28, you would use the same basic process but will result in the less accurate answer

≈ Both of these answers are correct  but it depends on how narrow and accurate you want it.

21/2 hours=150 minutes150 minutes x 80 beats per minute= 12,000 beats in 2 1/2 hours