138657 ÷ 86 
The aim is to understand the frequency of 86 in 138657.

Going ahead to step 1:
86 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 86

Step 2:
The number 86 fits into 13 0 times, leaving a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 86

Moving on to step 3:
138 divided by 86 is 1 with a remainder of 52.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 86 from 138, we get 52.
Take the next digit (6) from the dividend and append it to 52, then repeat: 526 / 86

On to step 4:
The number 86 fits into 526 6 times, leaving a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 16.0
Subtract 516 from 526 to get 10.
Bring next digit (5) of the dividend behind the 10 and repeat the process: 105 / 86

Step 5:
If we divide 105 by 86, we get 1 and a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 161.0
If we subtract 86 from 105, we get 19.
Append the next digit (7) from the dividend to 19 and continue with: 197 / 86

Let's proceed to step 6:
When dividing 197 by 86, we get 2 with a remainder of 25.
The number 2 becomes the next digit in our result. 
Result so far: 1612.0
Subtract 172 from 197 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 7:
The number 86 fits into 250 2 times, leaving a remainder of 78.
The number 2 becomes the next digit in our result. 
Result so far: 1612.2
Deduct 172 from 250 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 8:
When dividing 780 by 86, we get 9 with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 1612.29
The remainder is 6 after subtracting 774 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 9:
When dividing 60 by 86, we get 0 with a remainder of 60.
The next digit of our result is 0. 
Result so far: 1612.29
If we subtract 0 from 60, 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.

Let's proceed to step 10:
The number 86 fits into 600 6 times, leaving a remainder of 84.
Record the quotient 6 as the next digit in the result. 
Result so far: 1612.2906
If we take 516 away from 600, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 11:
86 can be fit into 840 9 times, resulting in a remainder of 66.
Put 9 as the next digit of the answer. 
Result so far: 1612.29069
Deduct 774 from 840 and we're left 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.

Let's proceed to step 12:
660 divided by 86 is 7 with a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 1612.290697
Deduct 602 from 660 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 13:
86 can be fit into 580 6 times, resulting in a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 1612.2906976
If we subtract 516 from 580, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 14:
The number 86 fits into 640 7 times, leaving a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 1612.29069767
Subtract 602 from 640 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 1612.29069767 with a remaining 3.8e-08.