81307203 ÷ 607 
The aim is to understand the frequency of 607 in 81307203.

Let's proceed to step 1:
8 divided by 607 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 607

Step 2:
607 can be fit into 81 0 times, resulting in a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Take the next digit (3) from the dividend and append it to 81, then repeat: 813 / 607

Moving on to step 3:
813 divided by 607 is 1 with a remainder of 206.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 206 after subtracting 607 from 813.
Include the next digit (0) from the dividend after 206, then repeat: 2060 / 607

Moving on to step 4:
2060 divided by 607 is 3 with a remainder of 239.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we subtract 1821 from 2060, we get 239.
Bring next digit (7) of the dividend behind the 239 and repeat the process: 2397 / 607

Advancing to step 5:
If we divide 2397 by 607, we get 3 and a remainder of 576.
Write down 3 as next digit of the result. 
Result so far: 133.0
Deduct 1821 from 2397 and we're left with 576.
Include the next digit (2) from the dividend after 576, then repeat: 5762 / 607

On to step 6:
5762 divided by 607 is 9 with a remainder of 299.
Use 9 as the next digit of our solution. 
Result so far: 1339.0
Subtracting 5463 from 5762 leaves us with 299.
Append the next digit (0) from the dividend to 299 and continue with: 2990 / 607

Going ahead to step 7:
The number 607 fits into 2990 4 times, leaving a remainder of 562.
The next digit of our result is 4. 
Result so far: 13394.0
Subtract 2428 from 2990 to get 562.
Append the next digit (3) from the dividend to 562 and continue with: 5623 / 607

Step 8:
607 can be fit into 5623 9 times, resulting in a remainder of 160.
The number 9 becomes the next digit in our result. 
Result so far: 133949.0
Deduct 5463 from 5623 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.

Advancing to step 9:
1600 divided by 607 is 2 with a remainder of 386.
The number 2 becomes the next digit in our result. 
Result so far: 133949.2
If we subtract 1214 from 1600, we get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Going ahead to step 10:
The number 607 fits into 3860 6 times, leaving a remainder of 218.
Record the quotient 6 as the next digit in the result. 
Result so far: 133949.26
Subtracting 3642 from 3860 leaves us with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Let's proceed to step 11:
607 goes into 2180 3 times with a remainder of 359.
Record the quotient 3 as the next digit in the result. 
Result so far: 133949.263
The remainder is 359 after subtracting 1821 from 2180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3590, and continue the process.

Step 12:
607 goes into 3590 5 times with a remainder of 555.
Write down 5 as next digit of the result. 
Result so far: 133949.2635
Subtract 3035 from 3590 to get 555.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

On to step 13:
5550 divided by 607 is 9 with a remainder of 87.
Record the quotient 9 as the next digit in the result. 
Result so far: 133949.26359
If we subtract 5463 from 5550, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Going ahead to step 14:
The number 607 fits into 870 1 times, leaving a remainder of 263.
Put 1 as the next digit of the answer. 
Result so far: 133949.263591
The remainder is 263 after subtracting 607 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2630, and continue the process.

Step 15:
607 goes into 2630 4 times with a remainder of 202.
The number 4 becomes the next digit in our result. 
Result so far: 133949.2635914
Subtracting 2428 from 2630 leaves us with 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Advancing to step 16:
607 goes into 2020 3 times with a remainder of 199.
Use 3 as the next digit of our solution. 
Result so far: 133949.26359143
Subtract 1821 from 2020 to get 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

The final result is 133949.26359143 with a remainder of 1.99e-07.