As a number it is: 24,600,000,000 = 24.6 billion
19.35 billion = 19,350,000,000
As a number: 7,125,000,000 = 7.125 billion
As a number it is: 1,800,000,000 = 1.8 billion
To write 87 billion 932, you would start by writing the number 87, followed by the word "billion." Then, you would write the number 932 as digits. So, it would be written as "87 billion 932."
15,000,000,000
Since you asked how I would write the number, the answer is 1031.
As a number it is: 6,080,000,000 = 6.08 billion
As a number it is: 529,600,000,000 = 529.6 billion
As a number it is 12,800,000,000 = 12.8 billion
As a number it is: 24,600,000,000 = 24.6 billion
19.35 billion = 19,350,000,000
As a number: 7,125,000,000 = 7.125 billion
As a number it is: 1,800,000,000 = 1.8 billion
15,000,000,000
15,000,027
80 billion = 80,000,000,000