We're dividing 35442447 by 520 
The aim is to understand the frequency of 520 in 35442447.

Step 1:
When dividing 3 by 520, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 520

Moving on to step 2:
520 goes into 35 0 times with a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Include the next digit (4) from the dividend after 35, then repeat: 354 / 520

Step 3:
520 can be fit into 354 0 times, resulting in a remainder of 354.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 354 leaves us with 354.
Append the next digit (4) from the dividend to 354 and continue with: 3544 / 520

Moving on to step 4:
520 can be fit into 3544 6 times, resulting in a remainder of 424.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 3120 from 3544 leaves us with 424.
Fetch the next digit (2) from the dividend, attach it to 424 and continue: 4242 / 520

Going ahead to step 5:
520 can be fit into 4242 8 times, resulting in a remainder of 82.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
The remainder is 82 after subtracting 4160 from 4242.
Bring next digit (4) of the dividend behind the 82 and repeat the process: 824 / 520

Step 6:
520 goes into 824 1 times with a remainder of 304.
Use 1 as the next digit of our solution. 
Result so far: 681.0
If we subtract 520 from 824, we get 304.
Append the next digit (4) from the dividend to 304 and continue with: 3044 / 520

Moving on to step 7:
520 goes into 3044 5 times with a remainder of 444.
Record the quotient 5 as the next digit in the result. 
Result so far: 6815.0
If we subtract 2600 from 3044, we get 444.
Fetch the next digit (7) from the dividend, attach it to 444 and continue: 4447 / 520

Moving on to step 8:
When dividing 4447 by 520, we get 8 with a remainder of 287.
Use 8 as the next digit of our solution. 
Result so far: 68158.0
If we subtract 4160 from 4447, we get 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Going ahead to step 9:
The number 520 fits into 2870 5 times, leaving a remainder of 270.
The next digit of our result is 5. 
Result so far: 68158.5
The remainder is 270 after subtracting 2600 from 2870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Advancing to step 10:
When dividing 2700 by 520, we get 5 with a remainder of 100.
The number 5 becomes the next digit in our result. 
Result so far: 68158.55
Subtracting 2600 from 2700 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The quotient of the division is 68158.55, and the remainder is 0.1.