91885801 ÷ 803 
The aim is to understand the frequency of 803 in 91885801.

Let's proceed to step 1:
If we divide 9 by 803, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 803

On to step 2:
If we divide 91 by 803, we get 0 and a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 91 to get 91.
Append the next digit (8) from the dividend to 91 and continue with: 918 / 803

Step 3:
803 can be fit into 918 1 times, resulting in a remainder of 115.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 803 from 918 and we're left with 115.
Fetch the next digit (8) from the dividend, attach it to 115 and continue: 1158 / 803

Moving on to step 4:
The number 803 fits into 1158 1 times, leaving a remainder of 355.
The next digit of our result is 1. 
Result so far: 11.0
Subtract 803 from 1158 to get 355.
Bring next digit (5) of the dividend behind the 355 and repeat the process: 3555 / 803

Let's proceed to step 5:
When dividing 3555 by 803, we get 4 with a remainder of 343.
Use 4 as the next digit of our solution. 
Result so far: 114.0
Subtract 3212 from 3555 to get 343.
Bring next digit (8) of the dividend behind the 343 and repeat the process: 3438 / 803

Step 6:
If we divide 3438 by 803, we get 4 and a remainder of 226.
Use 4 as the next digit of our solution. 
Result so far: 1144.0
The remainder is 226 after subtracting 3212 from 3438.
Include the next digit (0) from the dividend after 226, then repeat: 2260 / 803

Going ahead to step 7:
If we divide 2260 by 803, we get 2 and a remainder of 654.
Record the quotient 2 as the next digit in the result. 
Result so far: 11442.0
The remainder is 654 after subtracting 1606 from 2260.
Append the next digit (1) from the dividend to 654 and continue with: 6541 / 803

Step 8:
803 can be fit into 6541 8 times, resulting in a remainder of 117.
Record the quotient 8 as the next digit in the result. 
Result so far: 114428.0
The remainder is 117 after subtracting 6424 from 6541.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Going ahead to step 9:
The number 803 fits into 1170 1 times, leaving a remainder of 367.
Use 1 as the next digit of our solution. 
Result so far: 114428.1
If we subtract 803 from 1170, we get 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Let's proceed to step 10:
803 goes into 3670 4 times with a remainder of 458.
Use 4 as the next digit of our solution. 
Result so far: 114428.14
Subtracting 3212 from 3670 leaves us with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Moving on to step 11:
If we divide 4580 by 803, we get 5 and a remainder of 565.
Put 5 as the next digit of the answer. 
Result so far: 114428.145
Subtracting 4015 from 4580 leaves us with 565.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

On to step 12:
When dividing 5650 by 803, we get 7 with a remainder of 29.
Use 7 as the next digit of our solution. 
Result so far: 114428.1457
If we subtract 5621 from 5650, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 13:
The number 803 fits into 290 0 times, leaving a remainder of 290.
Put 0 as the next digit of the answer. 
Result so far: 114428.1457
Deduct 0 from 290 and we're left with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Going ahead to step 14:
803 goes into 2900 3 times with a remainder of 491.
The number 3 becomes the next digit in our result. 
Result so far: 114428.145703
Deduct 2409 from 2900 and we're left with 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Moving on to step 15:
803 goes into 4910 6 times with a remainder of 92.
The next digit of our result is 6. 
Result so far: 114428.1457036
Subtracting 4818 from 4910 leaves us with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Advancing to step 16:
803 goes into 920 1 times with a remainder of 117.
Use 1 as the next digit of our solution. 
Result so far: 114428.14570361
If we take 803 away from 920, we end up with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

The final outcome is 114428.14570361, with a leftover of 1.17e-07.