21142573 ÷ 484 
The aim is to understand the frequency of 484 in 21142573.

Going ahead to step 1:
The number 484 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 484

Let's proceed to step 2:
The number 484 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Fetch the next digit (1) from the dividend, attach it to 21 and continue: 211 / 484

On to step 3:
The number 484 fits into 211 0 times, leaving a remainder of 211.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 211, we end up with 211.
Append the next digit (4) from the dividend to 211 and continue with: 2114 / 484

Going ahead to step 4:
484 goes into 2114 4 times with a remainder of 178.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 178 after subtracting 1936 from 2114.
Take the next digit (2) from the dividend and append it to 178, then repeat: 1782 / 484

Advancing to step 5:
1782 divided by 484 is 3 with a remainder of 330.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
Deduct 1452 from 1782 and we're left with 330.
Include the next digit (5) from the dividend after 330, then repeat: 3305 / 484

Step 6:
The number 484 fits into 3305 6 times, leaving a remainder of 401.
Record the quotient 6 as the next digit in the result. 
Result so far: 436.0
Subtracting 2904 from 3305 leaves us with 401.
Append the next digit (7) from the dividend to 401 and continue with: 4017 / 484

Advancing to step 7:
484 can be fit into 4017 8 times, resulting in a remainder of 145.
The number 8 becomes the next digit in our result. 
Result so far: 4368.0
Subtract 3872 from 4017 to get 145.
Append the next digit (3) from the dividend to 145 and continue with: 1453 / 484

Moving on to step 8:
484 goes into 1453 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 43683.0
If we take 1452 away from 1453, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
When dividing 10 by 484, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 43683.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
When dividing 100 by 484, we get 0 with a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 43683.0
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

After the division, we end up with 43683.0 and a remainder of 0.1.