A billion is the unitary number multiplied by 10 to the power of 9.

A thousand is the unitary number multiplied by 10 to the power of 3.

A thousandth is the unitary number divided by 10 to the third power.

If we have two billions, we just need to multiply one billion by two

Using the same argument for four hundred seventy-five thousand and one hundred fifty thousandths, we have

Adding all those numbers together, we have

Our number is 2,000,475,000.150.