15830007 ÷ 639 
The aim is to understand the frequency of 639 in 15830007.

Going ahead to step 1:
639 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 639

Let's proceed to step 2:
15 divided by 639 is 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Bring next digit (8) of the dividend behind the 15 and repeat the process: 158 / 639

Going ahead to step 3:
158 divided by 639 is 0 with a remainder of 158.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 158 and we're left with 158.
Include the next digit (3) from the dividend after 158, then repeat: 1583 / 639

On to step 4:
639 goes into 1583 2 times with a remainder of 305.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 1278 from 1583, we get 305.
Include the next digit (0) from the dividend after 305, then repeat: 3050 / 639

Moving on to step 5:
639 goes into 3050 4 times with a remainder of 494.
Use 4 as the next digit of our solution. 
Result so far: 24.0
The remainder is 494 after subtracting 2556 from 3050.
Take the next digit (0) from the dividend and append it to 494, then repeat: 4940 / 639

Step 6:
If we divide 4940 by 639, we get 7 and a remainder of 467.
Put 7 as the next digit of the answer. 
Result so far: 247.0
Subtracting 4473 from 4940 leaves us with 467.
Fetch the next digit (0) from the dividend, attach it to 467 and continue: 4670 / 639

Moving on to step 7:
639 goes into 4670 7 times with a remainder of 197.
Put 7 as the next digit of the answer. 
Result so far: 2477.0
If we take 4473 away from 4670, we end up with 197.
Bring next digit (7) of the dividend behind the 197 and repeat the process: 1977 / 639

On to step 8:
639 can be fit into 1977 3 times, resulting in a remainder of 60.
Put 3 as the next digit of the answer. 
Result so far: 24773.0
If we subtract 1917 from 1977, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 9:
If we divide 600 by 639, we get 0 and a remainder of 600.
Put 0 as the next digit of the answer. 
Result so far: 24773.0
If we subtract 0 from 600, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Advancing to step 10:
6000 divided by 639 is 9 with a remainder of 249.
Record the quotient 9 as the next digit in the result. 
Result so far: 24773.09
The remainder is 249 after subtracting 5751 from 6000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

On to step 11:
639 can be fit into 2490 3 times, resulting in a remainder of 573.
Put 3 as the next digit of the answer. 
Result so far: 24773.093
Subtract 1917 from 2490 to get 573.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5730, and continue the process.

Moving on to step 12:
5730 divided by 639 is 8 with a remainder of 618.
Use 8 as the next digit of our solution. 
Result so far: 24773.0938
Deduct 5112 from 5730 and we're left with 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

On to step 13:
When dividing 6180 by 639, we get 9 with a remainder of 429.
Use 9 as the next digit of our solution. 
Result so far: 24773.09389
If we take 5751 away from 6180, we end up with 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Moving on to step 14:
If we divide 4290 by 639, we get 6 and a remainder of 456.
Use 6 as the next digit of our solution. 
Result so far: 24773.093896
If we take 3834 away from 4290, we end up with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Step 15:
4560 divided by 639 is 7 with a remainder of 87.
Put 7 as the next digit of the answer. 
Result so far: 24773.0938967
If we subtract 4473 from 4560, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Let's proceed to step 16:
The number 639 fits into 870 1 times, leaving a remainder of 231.
Record the quotient 1 as the next digit in the result. 
Result so far: 24773.09389671
Subtracting 639 from 870 leaves us with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

The quotient of the division is 24773.09389671, and the remainder is 2.31e-07.