90669271 ÷ 201 
The aim is to understand the frequency of 201 in 90669271.

Advancing to step 1:
9 divided by 201 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 201

On to step 2:
If we divide 90 by 201, we get 0 and a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Bring next digit (6) of the dividend behind the 90 and repeat the process: 906 / 201

On to step 3:
When dividing 906 by 201, we get 4 with a remainder of 102.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 804 from 906 and we're left with 102.
Take the next digit (6) from the dividend and append it to 102, then repeat: 1026 / 201

Step 4:
The number 201 fits into 1026 5 times, leaving a remainder of 21.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
If we subtract 1005 from 1026, we get 21.
Grab the next digit (9) from the dividend, add it to 21, then carry on: 219 / 201

Going ahead to step 5:
219 divided by 201 is 1 with a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 451.0
The remainder is 18 after subtracting 201 from 219.
Bring next digit (2) of the dividend behind the 18 and repeat the process: 182 / 201

Step 6:
182 divided by 201 is 0 with a remainder of 182.
The next digit of our result is 0. 
Result so far: 4510.0
If we take 0 away from 182, we end up with 182.
Include the next digit (7) from the dividend after 182, then repeat: 1827 / 201

Step 7:
If we divide 1827 by 201, we get 9 and a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 45109.0
If we take 1809 away from 1827, we end up with 18.
Include the next digit (1) from the dividend after 18, then repeat: 181 / 201

Step 8:
181 divided by 201 is 0 with a remainder of 181.
Write down 0 as next digit of the result. 
Result so far: 451090.0
Subtracting 0 from 181 leaves us with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Advancing to step 9:
When dividing 1810 by 201, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 451090.9
Subtract 1809 from 1810 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 10:
The number 201 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 451090.9
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 11:
201 goes into 100 0 times with a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 451090.9
If we take 0 away from 100, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final outcome is 451090.9, with a leftover of 0.01.