What is 7700000 percent of 21 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 21 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 21 is 100%, so we can write it down as 21=100%.
4. We know, that x is 7700000% of the output value, so we can write it down as x=7700000%.
5. Now we have two simple equations:
1) 21=100%
2) x=7700000%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
21/x=100%/7700000%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 7700000% of 21

21/x=100/7700000
(21/x)*x=(100/7700000)*x       - we multiply both sides of the equation by x
21=1.2987012987013E-5*x       - we divide both sides of the equation by (1.2987012987013E-5) to get x
21/1.2987012987013E-5=x
1617000=x
x=1617000

now we have:
7700000% of 21=1617000