Let's divide 81939453 by 207
The aim is to understand the frequency of 207 in 81939453.

On to step 1:
207 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 207

Moving on to step 2:
207 can be fit into 81 0 times, resulting in a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Grab the next digit (9) from the dividend, add it to 81, then carry on: 819 / 207

Let's proceed to step 3:
819 divided by 207 is 3 with a remainder of 198.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 621 from 819, we get 198.
Fetch the next digit (3) from the dividend, attach it to 198 and continue: 1983 / 207

On to step 4:
1983 divided by 207 is 9 with a remainder of 120.
Write down 9 as next digit of the result. 
Result so far: 39.0
If we take 1863 away from 1983, we end up with 120.
Grab the next digit (9) from the dividend, add it to 120, then carry on: 1209 / 207

On to step 5:
1209 divided by 207 is 5 with a remainder of 174.
Use 5 as the next digit of our solution. 
Result so far: 395.0
The remainder is 174 after subtracting 1035 from 1209.
Fetch the next digit (4) from the dividend, attach it to 174 and continue: 1744 / 207

Going ahead to step 6:
207 goes into 1744 8 times with a remainder of 88.
Use 8 as the next digit of our solution. 
Result so far: 3958.0
Subtract 1656 from 1744 to get 88.
Fetch the next digit (5) from the dividend, attach it to 88 and continue: 885 / 207

Step 7:
207 can be fit into 885 4 times, resulting in a remainder of 57.
Record the quotient 4 as the next digit in the result. 
Result so far: 39584.0
Deduct 828 from 885 and we're left with 57.
Bring next digit (3) of the dividend behind the 57 and repeat the process: 573 / 207

Moving on to step 8:
The number 207 fits into 573 2 times, leaving a remainder of 159.
Use 2 as the next digit of our solution. 
Result so far: 395842.0
If we take 414 away from 573, we end up with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Going ahead to step 9:
If we divide 1590 by 207, we get 7 and a remainder of 141.
Use 7 as the next digit of our solution. 
Result so far: 395842.7
If we take 1449 away from 1590, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Moving on to step 10:
207 goes into 1410 6 times with a remainder of 168.
The next digit of our result is 6. 
Result so far: 395842.76
The remainder is 168 after subtracting 1242 from 1410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 11:
207 goes into 1680 8 times with a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 395842.768
Subtract 1656 from 1680 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 12:
240 divided by 207 is 1 with a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 395842.7681
The remainder is 33 after subtracting 207 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 13:
If we divide 330 by 207, we get 1 and a remainder of 123.
Use 1 as the next digit of our solution. 
Result so far: 395842.76811
If we take 207 away from 330, we end up with 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

After the division, we end up with 395842.76811 and a remainder of 0.000123.