87920509 ÷ 139 
The aim is to understand the frequency of 139 in 87920509.

Going ahead to step 1:
If we divide 8 by 139, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 139

Going ahead to step 2:
The number 139 fits into 87 0 times, leaving a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Take the next digit (9) from the dividend and append it to 87, then repeat: 879 / 139

Step 3:
The number 139 fits into 879 6 times, leaving a remainder of 45.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 834 from 879 and we're left with 45.
Fetch the next digit (2) from the dividend, attach it to 45 and continue: 452 / 139

Let's proceed to step 4:
When dividing 452 by 139, we get 3 with a remainder of 35.
The number 3 becomes the next digit in our result. 
Result so far: 63.0
Deduct 417 from 452 and we're left with 35.
Grab the next digit (0) from the dividend, add it to 35, then carry on: 350 / 139

Advancing to step 5:
When dividing 350 by 139, we get 2 with a remainder of 72.
Use 2 as the next digit of our solution. 
Result so far: 632.0
Subtracting 278 from 350 leaves us with 72.
Include the next digit (5) from the dividend after 72, then repeat: 725 / 139

Advancing to step 6:
139 can be fit into 725 5 times, resulting in a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 6325.0
The remainder is 30 after subtracting 695 from 725.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 139

Moving on to step 7:
300 divided by 139 is 2 with a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 63252.0
Subtracting 278 from 300 leaves us with 22.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 139

Moving on to step 8:
The number 139 fits into 229 1 times, leaving a remainder of 90.
The number 1 becomes the next digit in our result. 
Result so far: 632521.0
Subtract 139 from 229 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 9:
If we divide 900 by 139, we get 6 and a remainder of 66.
Write down 6 as next digit of the result. 
Result so far: 632521.6
Subtracting 834 from 900 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 10:
139 can be fit into 660 4 times, resulting in a remainder of 104.
Write down 4 as next digit of the result. 
Result so far: 632521.64
Subtract 556 from 660 to get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Let's proceed to step 11:
139 can be fit into 1040 7 times, resulting in a remainder of 67.
The next digit of our result is 7. 
Result so far: 632521.647
Subtract 973 from 1040 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 12:
139 goes into 670 4 times with a remainder of 114.
Write down 4 as next digit of the result. 
Result so far: 632521.6474
The remainder is 114 after subtracting 556 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 13:
139 goes into 1140 8 times with a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 632521.64748
Deduct 1112 from 1140 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 14:
The number 139 fits into 280 2 times, leaving a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 632521.647482
The remainder is 2 after subtracting 278 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 15:
When dividing 20 by 139, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 632521.647482
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 16:
139 can be fit into 200 1 times, resulting in a remainder of 61.
The next digit of our result is 1. 
Result so far: 632521.64748201
If we take 139 away from 200, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

In conclusion, the division gives 632521.64748201 with a balance of 6.1e-08.