What is 7.8125E-8 percent of 320000000 - 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 320000000 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 320000000 is 100%, so we can write it down as 320000000=100%.
4. We know, that x is 7.8125E-8% of the output value, so we can write it down as x=7.8125E-8%.
5. Now we have two simple equations:
1) 320000000=100%
2) x=7.8125E-8%
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:
320000000/x=100%/7.8125E-8%
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 7.8125E-8% of 320000000

320000000/x=100/7.8125E-8
(320000000/x)*x=(100/7.8125E-8)*x       - we multiply both sides of the equation by x
320000000=1280000000*x       - we divide both sides of the equation by (1280000000) to get x
320000000/1280000000=x
0.25=x
x=0.25

now we have:
7.8125E-8% of 320000000=0.25