You canwrite 5.73 billion as 5,730,000,000.
DLXXIII
5.73
I write 620 billion as 620 billion.
0.573 = 573/1000
Sixteen point two billion is how I would write it.
write 573 thousandths in expanded form
573/1000 or 0.573
You write 3.56 billion as 3,560,000,000.
To write 573 thousandths in expanded form, you break it down into its component parts based on place value. It can be expressed as (5 \times 0.1 + 7 \times 0.01 + 3 \times 0.001). This shows the contribution of each digit in the decimal representation of 573 thousandths.
40,300,000,000
573 = (5 x 102) + (7 x 101) + (3 x 100)
As a number it is: 1,800,000,000 = 1.8 billion