Let's divide 90886 by 39
The aim is to understand the frequency of 39 in 90886.

On to step 1:
The number 39 fits into 9 0 times, leaving a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 39

On to step 2:
90 divided by 39 is 2 with a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 78 away from 90, we end up with 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 39

Advancing to step 3:
If we divide 128 by 39, we get 3 and a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtract 117 from 128 to get 11.
Take the next digit (8) from the dividend and append it to 11, then repeat: 118 / 39

Let's proceed to step 4:
39 can be fit into 118 3 times, resulting in a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 233.0
If we subtract 117 from 118, we get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 39

Going ahead to step 5:
16 divided by 39 is 0 with a remainder of 16.
The next digit of our result is 0. 
Result so far: 2330.0
Subtracting 0 from 16 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 6:
When dividing 160 by 39, we get 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 2330.4
If we take 156 away from 160, 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.

Moving on to step 7:
If we divide 40 by 39, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 2330.41
If we subtract 39 from 40, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 8:
39 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 2330.41
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
39 can be fit into 100 2 times, resulting in a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 2330.4102
Subtract 78 from 100 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
When dividing 220 by 39, we get 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 2330.41025
If we take 195 away from 220, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 11:
250 divided by 39 is 6 with a remainder of 16.
The next digit of our result is 6. 
Result so far: 2330.410256
Subtracting 234 from 250 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
39 goes into 160 4 times with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 2330.4102564
Subtract 156 from 160 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 13:
The number 39 fits into 40 1 times, leaving a remainder of 1.
The next digit of our result is 1. 
Result so far: 2330.41025641
Subtracting 39 from 40 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 2330.41025641 and a remainder of 1e-09.