84671287 ÷ 139 
The aim is to understand the frequency of 139 in 84671287.

Step 1:
If we divide 8 by 139, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 139

On to step 2:
The number 139 fits into 84 0 times, leaving a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 84, we get 84.
Grab the next digit (6) from the dividend, add it to 84, then carry on: 846 / 139

Step 3:
The number 139 fits into 846 6 times, leaving a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 12 after subtracting 834 from 846.
Take the next digit (7) from the dividend and append it to 12, then repeat: 127 / 139

Going ahead to step 4:
When dividing 127 by 139, we get 0 with a remainder of 127.
Record the quotient 0 as the next digit in the result. 
Result so far: 60.0
If we subtract 0 from 127, we get 127.
Grab the next digit (1) from the dividend, add it to 127, then carry on: 1271 / 139

Moving on to step 5:
139 can be fit into 1271 9 times, resulting in a remainder of 20.
The next digit of our result is 9. 
Result so far: 609.0
Deduct 1251 from 1271 and we're left with 20.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 139

Let's proceed to step 6:
If we divide 202 by 139, we get 1 and a remainder of 63.
Record the quotient 1 as the next digit in the result. 
Result so far: 6091.0
Subtract 139 from 202 to get 63.
Include the next digit (8) from the dividend after 63, then repeat: 638 / 139

Step 7:
139 goes into 638 4 times with a remainder of 82.
Write down 4 as next digit of the result. 
Result so far: 60914.0
The remainder is 82 after subtracting 556 from 638.
Include the next digit (7) from the dividend after 82, then repeat: 827 / 139

Step 8:
139 goes into 827 5 times with a remainder of 132.
Write down 5 as next digit of the result. 
Result so far: 609145.0
The remainder is 132 after subtracting 695 from 827.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

On to step 9:
The number 139 fits into 1320 9 times, leaving a remainder of 69.
Use 9 as the next digit of our solution. 
Result so far: 609145.9
If we take 1251 away from 1320, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 10:
690 divided by 139 is 4 with a remainder of 134.
Record the quotient 4 as the next digit in the result. 
Result so far: 609145.94
The remainder is 134 after subtracting 556 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

On to step 11:
139 can be fit into 1340 9 times, resulting in a remainder of 89.
Put 9 as the next digit of the answer. 
Result so far: 609145.949
Deduct 1251 from 1340 and we're left with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 12:
When dividing 890 by 139, we get 6 with a remainder of 56.
The next digit of our result is 6. 
Result so far: 609145.9496
The remainder is 56 after subtracting 834 from 890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 13:
The number 139 fits into 560 4 times, leaving a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 609145.94964
If we take 556 away from 560, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 14:
The number 139 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 609145.94964
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 15:
139 can be fit into 400 2 times, resulting in a remainder of 122.
Write down 2 as next digit of the result. 
Result so far: 609145.9496402
Subtract 278 from 400 to get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Going ahead to step 16:
The number 139 fits into 1220 8 times, leaving a remainder of 108.
The next digit of our result is 8. 
Result so far: 609145.94964028
The remainder is 108 after subtracting 1112 from 1220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

After the division, we end up with 609145.94964028 and a remainder of 1.08e-07.