Let's divide 39465963 by 181
The aim is to understand the frequency of 181 in 39465963.

On to step 1:
181 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 181

Step 2:
181 goes into 39 0 times with a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Grab the next digit (4) from the dividend, add it to 39, then carry on: 394 / 181

Going ahead to step 3:
If we divide 394 by 181, we get 2 and a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 362 from 394 and we're left with 32.
Bring next digit (6) of the dividend behind the 32 and repeat the process: 326 / 181

Moving on to step 4:
326 divided by 181 is 1 with a remainder of 145.
Put 1 as the next digit of the answer. 
Result so far: 21.0
If we subtract 181 from 326, we get 145.
Bring next digit (5) of the dividend behind the 145 and repeat the process: 1455 / 181

Step 5:
1455 divided by 181 is 8 with a remainder of 7.
The next digit of our result is 8. 
Result so far: 218.0
If we subtract 1448 from 1455, we get 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 181

Let's proceed to step 6:
181 can be fit into 79 0 times, resulting in a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 2180.0
The remainder is 79 after subtracting 0 from 79.
Fetch the next digit (6) from the dividend, attach it to 79 and continue: 796 / 181

On to step 7:
When dividing 796 by 181, we get 4 with a remainder of 72.
Use 4 as the next digit of our solution. 
Result so far: 21804.0
Subtracting 724 from 796 leaves us with 72.
Bring next digit (3) of the dividend behind the 72 and repeat the process: 723 / 181

Going ahead to step 8:
181 goes into 723 3 times with a remainder of 180.
Record the quotient 3 as the next digit in the result. 
Result so far: 218043.0
Subtracting 543 from 723 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 9:
If we divide 1800 by 181, we get 9 and a remainder of 171.
Put 9 as the next digit of the answer. 
Result so far: 218043.9
If we take 1629 away from 1800, we end up with 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Moving on to step 10:
The number 181 fits into 1710 9 times, leaving a remainder of 81.
The next digit of our result is 9. 
Result so far: 218043.99
If we take 1629 away from 1710, 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.

The final outcome is 218043.99, with a leftover of 0.081.