We're dividing 21074972 by 242 
The aim is to understand the frequency of 242 in 21074972.

Moving on to step 1:
2 divided by 242 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 242

Advancing to step 2:
When dividing 21 by 242, we get 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (0) from the dividend and append it to 21, then repeat: 210 / 242

Let's proceed to step 3:
The number 242 fits into 210 0 times, leaving a remainder of 210.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 210 and we're left with 210.
Fetch the next digit (7) from the dividend, attach it to 210 and continue: 2107 / 242

Advancing to step 4:
2107 divided by 242 is 8 with a remainder of 171.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 171 after subtracting 1936 from 2107.
Append the next digit (4) from the dividend to 171 and continue with: 1714 / 242

Advancing to step 5:
If we divide 1714 by 242, we get 7 and a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 87.0
Subtracting 1694 from 1714 leaves us with 20.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 242

Step 6:
The number 242 fits into 209 0 times, leaving a remainder of 209.
Write down 0 as next digit of the result. 
Result so far: 870.0
If we take 0 away from 209, we end up with 209.
Append the next digit (7) from the dividend to 209 and continue with: 2097 / 242

Let's proceed to step 7:
242 can be fit into 2097 8 times, resulting in a remainder of 161.
Put 8 as the next digit of the answer. 
Result so far: 8708.0
The remainder is 161 after subtracting 1936 from 2097.
Append the next digit (2) from the dividend to 161 and continue with: 1612 / 242

On to step 8:
242 goes into 1612 6 times with a remainder of 160.
Put 6 as the next digit of the answer. 
Result so far: 87086.0
Subtracting 1452 from 1612 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 9:
242 goes into 1600 6 times with a remainder of 148.
Write down 6 as next digit of the result. 
Result so far: 87086.6
Subtract 1452 from 1600 to get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

On to step 10:
If we divide 1480 by 242, we get 6 and a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 87086.66
If we subtract 1452 from 1480, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 87086.66 and a remainder of 0.028.