We're dividing 74707675 by 221 
The aim is to understand the frequency of 221 in 74707675.

Advancing to step 1:
If we divide 7 by 221, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 221

Going ahead to step 2:
74 divided by 221 is 0 with a remainder of 74.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 74 and we're left with 74.
Take the next digit (7) from the dividend and append it to 74, then repeat: 747 / 221

Moving on to step 3:
221 goes into 747 3 times with a remainder of 84.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 663 from 747 to get 84.
Bring next digit (0) of the dividend behind the 84 and repeat the process: 840 / 221

Moving on to step 4:
When dividing 840 by 221, we get 3 with a remainder of 177.
The next digit of our result is 3. 
Result so far: 33.0
The remainder is 177 after subtracting 663 from 840.
Include the next digit (7) from the dividend after 177, then repeat: 1777 / 221

Advancing to step 5:
When dividing 1777 by 221, we get 8 with a remainder of 9.
The number 8 becomes the next digit in our result. 
Result so far: 338.0
If we subtract 1768 from 1777, we get 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 221

Advancing to step 6:
The number 221 fits into 96 0 times, leaving a remainder of 96.
Put 0 as the next digit of the answer. 
Result so far: 3380.0
Deduct 0 from 96 and we're left with 96.
Grab the next digit (7) from the dividend, add it to 96, then carry on: 967 / 221

Step 7:
967 divided by 221 is 4 with a remainder of 83.
Record the quotient 4 as the next digit in the result. 
Result so far: 33804.0
If we take 884 away from 967, we end up with 83.
Take the next digit (5) from the dividend and append it to 83, then repeat: 835 / 221

Advancing to step 8:
If we divide 835 by 221, we get 3 and a remainder of 172.
Put 3 as the next digit of the answer. 
Result so far: 338043.0
If we take 663 away from 835, we end up with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Let's proceed to step 9:
1720 divided by 221 is 7 with a remainder of 173.
The number 7 becomes the next digit in our result. 
Result so far: 338043.7
The remainder is 173 after subtracting 1547 from 1720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

On to step 10:
If we divide 1730 by 221, we get 7 and a remainder of 183.
The next digit of our result is 7. 
Result so far: 338043.77
Subtracting 1547 from 1730 leaves us with 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

Our division results in 338043.77 with a remaining 0.183.