What is 9.0E-9 percent of 7800000000 - 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 7800000000 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 7800000000 is 100%, so we can write it down as 7800000000=100%.
4. We know, that x is 9.0E-9% of the output value, so we can write it down as x=9.0E-9%.
5. Now we have two simple equations:
1) 7800000000=100%
2) x=9.0E-9%
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:
7800000000/x=100%/9.0E-9%
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 9.0E-9% of 7800000000

7800000000/x=100/9.0E-9
(7800000000/x)*x=(100/9.0E-9)*x       - we multiply both sides of the equation by x
7800000000=11111111111.111*x       - we divide both sides of the equation by (11111111111.111) to get x
7800000000/11111111111.111=x
0.702=x
x=0.702

now we have:
9.0E-9% of 7800000000=0.702