We're dividing 290741 by 86 
The aim is to understand the frequency of 86 in 290741.

Going ahead to step 1:
2 divided by 86 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 86

Going ahead to step 2:
When dividing 29 by 86, we get 0 with a remainder of 29.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 29, we get 29.
Include the next digit (0) from the dividend after 29, then repeat: 290 / 86

Advancing to step 3:
86 can be fit into 290 3 times, resulting in a remainder of 32.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 258 from 290 and we're left with 32.
Append the next digit (7) from the dividend to 32 and continue with: 327 / 86

Going ahead to step 4:
86 can be fit into 327 3 times, resulting in a remainder of 69.
Record the quotient 3 as the next digit in the result. 
Result so far: 33.0
The remainder is 69 after subtracting 258 from 327.
Grab the next digit (4) from the dividend, add it to 69, then carry on: 694 / 86

On to step 5:
86 goes into 694 8 times with a remainder of 6.
The next digit of our result is 8. 
Result so far: 338.0
If we subtract 688 from 694, we get 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 86

Moving on to step 6:
If we divide 61 by 86, we get 0 and a remainder of 61.
The next digit of our result is 0. 
Result so far: 3380.0
If we take 0 away from 61, 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.

On to step 7:
If we divide 610 by 86, we get 7 and a remainder of 8.
Use 7 as the next digit of our solution. 
Result so far: 3380.7
Deduct 602 from 610 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
86 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 3380.7
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 9:
When dividing 800 by 86, we get 9 with a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 3380.709
The remainder is 26 after subtracting 774 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 10:
When dividing 260 by 86, we get 3 with a remainder of 2.
The next digit of our result is 3. 
Result so far: 3380.7093
The remainder is 2 after subtracting 258 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 11:
When dividing 20 by 86, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 3380.7093
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
The number 86 fits into 200 2 times, leaving a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 3380.709302
Deduct 172 from 200 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.

Going ahead to step 13:
When dividing 280 by 86, we get 3 with a remainder of 22.
Put 3 as the next digit of the answer. 
Result so far: 3380.7093023
Subtracting 258 from 280 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 14:
When dividing 220 by 86, we get 2 with a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 3380.70930232
If we take 172 away from 220, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 3380.70930232 and a remainder of 4.8e-08.