We look at the division of 91287045 by 907 
The aim is to understand the frequency of 907 in 91287045.

Going ahead to step 1:
If we divide 9 by 907, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 907

Moving on to step 2:
When dividing 91 by 907, we get 0 with a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Include the next digit (2) from the dividend after 91, then repeat: 912 / 907

On to step 3:
912 divided by 907 is 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 907 away from 912, we end up with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 907

Advancing to step 4:
58 divided by 907 is 0 with a remainder of 58.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 58, we get 58.
Bring next digit (7) of the dividend behind the 58 and repeat the process: 587 / 907

Let's proceed to step 5:
The number 907 fits into 587 0 times, leaving a remainder of 587.
Write down 0 as next digit of the result. 
Result so far: 100.0
The remainder is 587 after subtracting 0 from 587.
Fetch the next digit (0) from the dividend, attach it to 587 and continue: 5870 / 907

Advancing to step 6:
The number 907 fits into 5870 6 times, leaving a remainder of 428.
Record the quotient 6 as the next digit in the result. 
Result so far: 1006.0
Subtract 5442 from 5870 to get 428.
Bring next digit (4) of the dividend behind the 428 and repeat the process: 4284 / 907

Step 7:
907 can be fit into 4284 4 times, resulting in a remainder of 656.
Use 4 as the next digit of our solution. 
Result so far: 10064.0
If we take 3628 away from 4284, we end up with 656.
Fetch the next digit (5) from the dividend, attach it to 656 and continue: 6565 / 907

Moving on to step 8:
The number 907 fits into 6565 7 times, leaving a remainder of 216.
Write down 7 as next digit of the result. 
Result so far: 100647.0
Subtract 6349 from 6565 to get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Advancing to step 9:
The number 907 fits into 2160 2 times, leaving a remainder of 346.
Use 2 as the next digit of our solution. 
Result so far: 100647.2
The remainder is 346 after subtracting 1814 from 2160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Let's proceed to step 10:
The number 907 fits into 3460 3 times, leaving a remainder of 739.
Write down 3 as next digit of the result. 
Result so far: 100647.23
Subtract 2721 from 3460 to get 739.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7390, and continue the process.

Let's proceed to step 11:
When dividing 7390 by 907, we get 8 with a remainder of 134.
Put 8 as the next digit of the answer. 
Result so far: 100647.238
Subtract 7256 from 7390 to get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Let's proceed to step 12:
If we divide 1340 by 907, we get 1 and a remainder of 433.
Use 1 as the next digit of our solution. 
Result so far: 100647.2381
Subtracting 907 from 1340 leaves us with 433.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4330, and continue the process.

Advancing to step 13:
907 goes into 4330 4 times with a remainder of 702.
The next digit of our result is 4. 
Result so far: 100647.23814
If we take 3628 away from 4330, we end up with 702.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

Moving on to step 14:
The number 907 fits into 7020 7 times, leaving a remainder of 671.
Use 7 as the next digit of our solution. 
Result so far: 100647.238147
Deduct 6349 from 7020 and we're left with 671.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6710, and continue the process.

Going ahead to step 15:
6710 divided by 907 is 7 with a remainder of 361.
Record the quotient 7 as the next digit in the result. 
Result so far: 100647.2381477
If we take 6349 away from 6710, we end up with 361.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3610, and continue the process.

The final outcome is 100647.2381477, with a leftover of 3.61e-06.