We look at the division of 3802521 by 442 
The aim is to understand the frequency of 442 in 3802521.

Moving on to step 1:
3 divided by 442 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 442

Let's proceed to step 2:
The number 442 fits into 38 0 times, leaving a remainder of 38.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 38 to get 38.
Grab the next digit (0) from the dividend, add it to 38, then carry on: 380 / 442

On to step 3:
If we divide 380 by 442, we get 0 and a remainder of 380.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 380 to get 380.
Take the next digit (2) from the dividend and append it to 380, then repeat: 3802 / 442

On to step 4:
442 goes into 3802 8 times with a remainder of 266.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 3536 from 3802 to get 266.
Append the next digit (5) from the dividend to 266 and continue with: 2665 / 442

Moving on to step 5:
The number 442 fits into 2665 6 times, leaving a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 86.0
If we take 2652 away from 2665, we end up with 13.
Fetch the next digit (2) from the dividend, attach it to 13 and continue: 132 / 442

Going ahead to step 6:
When dividing 132 by 442, we get 0 with a remainder of 132.
Use 0 as the next digit of our solution. 
Result so far: 860.0
Deduct 0 from 132 and we're left with 132.
Take the next digit (1) from the dividend and append it to 132, then repeat: 1321 / 442

On to step 7:
The number 442 fits into 1321 2 times, leaving a remainder of 437.
Use 2 as the next digit of our solution. 
Result so far: 8602.0
Deduct 884 from 1321 and we're left with 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Let's proceed to step 8:
The number 442 fits into 4370 9 times, leaving a remainder of 392.
The next digit of our result is 9. 
Result so far: 8602.9
Deduct 3978 from 4370 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Going ahead to step 9:
The number 442 fits into 3920 8 times, leaving a remainder of 384.
Use 8 as the next digit of our solution. 
Result so far: 8602.98
If we take 3536 away from 3920, we end up with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

On to step 10:
3840 divided by 442 is 8 with a remainder of 304.
Write down 8 as next digit of the result. 
Result so far: 8602.988
Subtracting 3536 from 3840 leaves us with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

The quotient of the division is 8602.988, and the remainder is 0.0304.