We're dividing 73819673 by 221 
The aim is to understand the frequency of 221 in 73819673.

Going ahead to step 1:
When dividing 7 by 221, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 221

On to step 2:
The number 221 fits into 73 0 times, leaving a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 73 to get 73.
Append the next digit (8) from the dividend to 73 and continue with: 738 / 221

Going ahead to step 3:
When dividing 738 by 221, we get 3 with a remainder of 75.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 663 from 738 to get 75.
Include the next digit (1) from the dividend after 75, then repeat: 751 / 221

Moving on to step 4:
The number 221 fits into 751 3 times, leaving a remainder of 88.
The next digit of our result is 3. 
Result so far: 33.0
If we take 663 away from 751, we end up with 88.
Fetch the next digit (9) from the dividend, attach it to 88 and continue: 889 / 221

Going ahead to step 5:
889 divided by 221 is 4 with a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 334.0
Deduct 884 from 889 and we're left with 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 221

Advancing to step 6:
If we divide 56 by 221, we get 0 and a remainder of 56.
Record the quotient 0 as the next digit in the result. 
Result so far: 3340.0
Deduct 0 from 56 and we're left with 56.
Take the next digit (7) from the dividend and append it to 56, then repeat: 567 / 221

Advancing to step 7:
The number 221 fits into 567 2 times, leaving a remainder of 125.
The next digit of our result is 2. 
Result so far: 33402.0
If we take 442 away from 567, we end up with 125.
Grab the next digit (3) from the dividend, add it to 125, then carry on: 1253 / 221

Advancing to step 8:
221 goes into 1253 5 times with a remainder of 148.
Write down 5 as next digit of the result. 
Result so far: 334025.0
If we take 1105 away from 1253, we end up with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Moving on to step 9:
When dividing 1480 by 221, we get 6 with a remainder of 154.
Write down 6 as next digit of the result. 
Result so far: 334025.6
Deduct 1326 from 1480 and we're left with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

On to step 10:
221 goes into 1540 6 times with a remainder of 214.
Put 6 as the next digit of the answer. 
Result so far: 334025.66
Subtract 1326 from 1540 to get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

The quotient of the division is 334025.66, and the remainder is 0.214.