We look at the division of 36891086 by 235 
The aim is to understand the frequency of 235 in 36891086.

On to step 1:
If we divide 3 by 235, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 235

Going ahead to step 2:
235 can be fit into 36 0 times, resulting in a remainder of 36.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 36, we end up with 36.
Include the next digit (8) from the dividend after 36, then repeat: 368 / 235

Going ahead to step 3:
235 can be fit into 368 1 times, resulting in a remainder of 133.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 235 from 368 leaves us with 133.
Bring next digit (9) of the dividend behind the 133 and repeat the process: 1339 / 235

Advancing to step 4:
1339 divided by 235 is 5 with a remainder of 164.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
The remainder is 164 after subtracting 1175 from 1339.
Fetch the next digit (1) from the dividend, attach it to 164 and continue: 1641 / 235

On to step 5:
1641 divided by 235 is 6 with a remainder of 231.
Record the quotient 6 as the next digit in the result. 
Result so far: 156.0
The remainder is 231 after subtracting 1410 from 1641.
Fetch the next digit (0) from the dividend, attach it to 231 and continue: 2310 / 235

On to step 6:
2310 divided by 235 is 9 with a remainder of 195.
Record the quotient 9 as the next digit in the result. 
Result so far: 1569.0
The remainder is 195 after subtracting 2115 from 2310.
Take the next digit (8) from the dividend and append it to 195, then repeat: 1958 / 235

Advancing to step 7:
When dividing 1958 by 235, we get 8 with a remainder of 78.
Use 8 as the next digit of our solution. 
Result so far: 15698.0
Subtracting 1880 from 1958 leaves us with 78.
Grab the next digit (6) from the dividend, add it to 78, then carry on: 786 / 235

Let's proceed to step 8:
If we divide 786 by 235, we get 3 and a remainder of 81.
Record the quotient 3 as the next digit in the result. 
Result so far: 156983.0
If we take 705 away from 786, we end up with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 9:
If we divide 810 by 235, we get 3 and a remainder of 105.
Put 3 as the next digit of the answer. 
Result so far: 156983.3
Deduct 705 from 810 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Let's proceed to step 10:
235 can be fit into 1050 4 times, resulting in a remainder of 110.
Record the quotient 4 as the next digit in the result. 
Result so far: 156983.34
Subtract 940 from 1050 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 11:
235 can be fit into 1100 4 times, resulting in a remainder of 160.
Record the quotient 4 as the next digit in the result. 
Result so far: 156983.344
Deduct 940 from 1100 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

The final outcome is 156983.344, with a leftover of 0.016.