We look at the division of 21221431 by 442 
The aim is to understand the frequency of 442 in 21221431.

Moving on to step 1:
442 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 442

Moving on to step 2:
21 divided by 442 is 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Fetch the next digit (2) from the dividend, attach it to 21 and continue: 212 / 442

Advancing to step 3:
442 goes into 212 0 times with a remainder of 212.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 212, we end up with 212.
Bring next digit (2) of the dividend behind the 212 and repeat the process: 2122 / 442

Advancing to step 4:
442 can be fit into 2122 4 times, resulting in a remainder of 354.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 1768 from 2122, we get 354.
Bring next digit (1) of the dividend behind the 354 and repeat the process: 3541 / 442

On to step 5:
442 can be fit into 3541 8 times, resulting in a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 48.0
Subtracting 3536 from 3541 leaves us with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 442

Step 6:
When dividing 54 by 442, we get 0 with a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 480.0
If we take 0 away from 54, we end up with 54.
Grab the next digit (3) from the dividend, add it to 54, then carry on: 543 / 442

Step 7:
When dividing 543 by 442, we get 1 with a remainder of 101.
The number 1 becomes the next digit in our result. 
Result so far: 4801.0
The remainder is 101 after subtracting 442 from 543.
Fetch the next digit (1) from the dividend, attach it to 101 and continue: 1011 / 442

Going ahead to step 8:
1011 divided by 442 is 2 with a remainder of 127.
The number 2 becomes the next digit in our result. 
Result so far: 48012.0
The remainder is 127 after subtracting 884 from 1011.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Step 9:
442 goes into 1270 2 times with a remainder of 386.
The number 2 becomes the next digit in our result. 
Result so far: 48012.2
Deduct 884 from 1270 and we're left with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Step 10:
442 goes into 3860 8 times with a remainder of 324.
The number 8 becomes the next digit in our result. 
Result so far: 48012.28
Deduct 3536 from 3860 and we're left with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 11:
442 goes into 3240 7 times with a remainder of 146.
The next digit of our result is 7. 
Result so far: 48012.287
If we take 3094 away from 3240, we end up with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

Step 12:
442 goes into 1460 3 times with a remainder of 134.
The number 3 becomes the next digit in our result. 
Result so far: 48012.2873
If we subtract 1326 from 1460, we 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 13:
When dividing 1340 by 442, we get 3 with a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 48012.28733
Deduct 1326 from 1340 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The quotient of the division is 48012.28733, and the remainder is 1.4e-05.