Using evidence from the passage, explain how the population of moths changed after the Industrial Revolution began.

After the pollution from the Industrial Revolution started affecting trees, most of the collected peppered moths were of the dark form. ... They were eaten by birds more and more, while the rare dark colored moths blended in better on the darker trees. This made the dark colored moths have a higher survival rate.

Idid the calculation and i get 875,000,000 which can be written as 8.75 x 10^6?