10^9 x 10^18 = 10^27 = an octillion
100 billion multiplied by 100 billion equals 10,000,000,000,000,000,000, or 10 quintillion. In numerical form, this is represented as (10^{20}).
Five quintillion, twenty billion, thirty thousand.
This depends upon whether you mean the English quintillion or the American quintillion. In the English form of numbers, the number order goes as follows: million, billion, trillion, quadrillion then quintillion. Therefore the amount of zeros will be 18. In the American form, the number order duplicates itself, so-to-speak, making each major sector have more numbers. The number order goes as follows: million, thousand million, billion, thousand billion, trillion... etc. Therefore the amount of zeros will be 30.
Eight billion.
To write 2.35 billion in standard form, you express it as a number multiplied by a power of ten. Since a billion is (10^9), you can write 2.35 billion as (2.35 \times 10^9).
11 billion.
1 billion (short form) is 100 crore.
Seventy quintillion, six hundred billion, eight million, one hundred two.
The short form of writing 4,352,697,109 is " 4.35 billion."
Three billion.
The number 10,007,000,000,000 can be expressed in short word form as "ten trillion seven billion."
To write ( bxbxbxbxbxb ) in short index form, you can group the terms. Since there are six ( b )s multiplied together, you can express it as ( b^6 ). Therefore, the short index form of ( bxbxbxbxbxb ) is ( b^6 ).