Let's divide 38194447 by 521
The aim is to understand the frequency of 521 in 38194447.

On to step 1:
If we divide 3 by 521, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 521

Advancing to step 2:
521 goes into 38 0 times with a remainder of 38.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 38, we end up with 38.
Fetch the next digit (1) from the dividend, attach it to 38 and continue: 381 / 521

Going ahead to step 3:
521 can be fit into 381 0 times, resulting in a remainder of 381.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 381, we end up with 381.
Append the next digit (9) from the dividend to 381 and continue with: 3819 / 521

Moving on to step 4:
521 can be fit into 3819 7 times, resulting in a remainder of 172.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 172 after subtracting 3647 from 3819.
Include the next digit (4) from the dividend after 172, then repeat: 1724 / 521

Step 5:
521 can be fit into 1724 3 times, resulting in a remainder of 161.
The next digit of our result is 3. 
Result so far: 73.0
If we subtract 1563 from 1724, we get 161.
Take the next digit (4) from the dividend and append it to 161, then repeat: 1614 / 521

Step 6:
521 can be fit into 1614 3 times, resulting in a remainder of 51.
Put 3 as the next digit of the answer. 
Result so far: 733.0
Subtracting 1563 from 1614 leaves us with 51.
Fetch the next digit (4) from the dividend, attach it to 51 and continue: 514 / 521

Going ahead to step 7:
If we divide 514 by 521, we get 0 and a remainder of 514.
Write down 0 as next digit of the result. 
Result so far: 7330.0
If we subtract 0 from 514, we get 514.
Grab the next digit (7) from the dividend, add it to 514, then carry on: 5147 / 521

Advancing to step 8:
When dividing 5147 by 521, we get 9 with a remainder of 458.
Use 9 as the next digit of our solution. 
Result so far: 73309.0
If we take 4689 away from 5147, we end up with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Moving on to step 9:
The number 521 fits into 4580 8 times, leaving a remainder of 412.
Write down 8 as next digit of the result. 
Result so far: 73309.8
Subtracting 4168 from 4580 leaves us with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Advancing to step 10:
521 can be fit into 4120 7 times, resulting in a remainder of 473.
Put 7 as the next digit of the answer. 
Result so far: 73309.87
Subtracting 3647 from 4120 leaves us with 473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4730, and continue the process.

Step 11:
521 can be fit into 4730 9 times, resulting in a remainder of 41.
The number 9 becomes the next digit in our result. 
Result so far: 73309.879
If we subtract 4689 from 4730, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 12:
410 divided by 521 is 0 with a remainder of 410.
The next digit of our result is 0. 
Result so far: 73309.879
Deduct 0 from 410 and we're left with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Step 13:
When dividing 4100 by 521, we get 7 with a remainder of 453.
The number 7 becomes the next digit in our result. 
Result so far: 73309.87907
Subtracting 3647 from 4100 leaves us with 453.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4530, and continue the process.

Step 14:
When dividing 4530 by 521, we get 8 with a remainder of 362.
Put 8 as the next digit of the answer. 
Result so far: 73309.879078
If we subtract 4168 from 4530, we get 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Moving on to step 15:
521 goes into 3620 6 times with a remainder of 494.
Put 6 as the next digit of the answer. 
Result so far: 73309.8790786
Deduct 3126 from 3620 and we're left with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

Advancing to step 16:
When dividing 4940 by 521, we get 9 with a remainder of 251.
The next digit of our result is 9. 
Result so far: 73309.87907869
If we take 4689 away from 4940, we end up with 251.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

In conclusion, the division gives 73309.87907869 with a balance of 2.51e-07.