To read a large number easily, we split the number into groups. We separate the groups by using comma or a space between them. The grouping of places is done from the right. The first group is ones group it has 3 places from the right. The second and the third group is grouped under thousands. The second and third groups have the next two places each.
The sixth place from the right is called lakhs place.
Now, let us read the number 145124. We place comma after 3-digit from the right and then after 2 digits. The number is written as 1,45,124. In the place value chart it is written as shown below.