331000= \frac{33}{1000}= 100033=
Let's write the simple fraction as a decimal fraction:
33.0 33.0 33.0
Since the fraction is divided by 1000, we move the decimal point three places to the left:
.0330 .0330 .0330
Now let's add the zero before the decimal point and we get:
0.0330=0.033 0.0330=0.033 0.0330=0.033
0.033