We're dividing 49735242 by 521 
The aim is to understand the frequency of 521 in 49735242.

Step 1:
4 divided by 521 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 521

Moving on to step 2:
521 can be fit into 49 0 times, resulting in a remainder of 49.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 49, we get 49.
Take the next digit (7) from the dividend and append it to 49, then repeat: 497 / 521

On to step 3:
The number 521 fits into 497 0 times, leaving a remainder of 497.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 497, we end up with 497.
Append the next digit (3) from the dividend to 497 and continue with: 4973 / 521

On to step 4:
If we divide 4973 by 521, we get 9 and a remainder of 284.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 4689 from 4973, we get 284.
Bring next digit (5) of the dividend behind the 284 and repeat the process: 2845 / 521

Going ahead to step 5:
521 goes into 2845 5 times with a remainder of 240.
Put 5 as the next digit of the answer. 
Result so far: 95.0
If we subtract 2605 from 2845, we get 240.
Include the next digit (2) from the dividend after 240, then repeat: 2402 / 521

Let's proceed to step 6:
521 goes into 2402 4 times with a remainder of 318.
Put 4 as the next digit of the answer. 
Result so far: 954.0
If we subtract 2084 from 2402, we get 318.
Take the next digit (4) from the dividend and append it to 318, then repeat: 3184 / 521

On to step 7:
521 goes into 3184 6 times with a remainder of 58.
Put 6 as the next digit of the answer. 
Result so far: 9546.0
Subtracting 3126 from 3184 leaves us with 58.
Fetch the next digit (2) from the dividend, attach it to 58 and continue: 582 / 521

Let's proceed to step 8:
If we divide 582 by 521, we get 1 and a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 95461.0
Subtract 521 from 582 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

On to step 9:
The number 521 fits into 610 1 times, leaving a remainder of 89.
Write down 1 as next digit of the result. 
Result so far: 95461.1
If we subtract 521 from 610, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Let's proceed to step 10:
If we divide 890 by 521, we get 1 and a remainder of 369.
The next digit of our result is 1. 
Result so far: 95461.11
Subtracting 521 from 890 leaves us with 369.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3690, and continue the process.

The final result is 95461.11 with a remainder of 0.369.