We look at the division of 63758801 by 13 
The aim is to understand the frequency of 13 in 63758801.

Step 1:
13 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 13

Advancing to step 2:
When dividing 63 by 13, we get 4 with a remainder of 11.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 52 away from 63, we end up with 11.
Grab the next digit (7) from the dividend, add it to 11, then carry on: 117 / 13

Going ahead to step 3:
117 divided by 13 is 9 with a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 49.0
If we subtract 117 from 117, we get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 13

Going ahead to step 4:
5 divided by 13 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 490.0
If we take 0 away from 5, we end up with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 13

Going ahead to step 5:
58 divided by 13 is 4 with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 4904.0
If we subtract 52 from 58, we get 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 13

Going ahead to step 6:
13 goes into 68 5 times with a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 49045.0
Subtracting 65 from 68 leaves us with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 13

On to step 7:
13 can be fit into 30 2 times, resulting in a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 490452.0
Deduct 26 from 30 and we're left with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 13

Step 8:
The number 13 fits into 41 3 times, leaving a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 4904523.0
Subtracting 39 from 41 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 9:
The number 13 fits into 20 1 times, leaving a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 4904523.1
Subtracting 13 from 20 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 10:
13 can be fit into 70 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 4904523.15
If we subtract 65 from 70, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
13 goes into 50 3 times with a remainder of 11.
The next digit of our result is 3. 
Result so far: 4904523.153
Subtract 39 from 50 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 12:
If we divide 110 by 13, we get 8 and a remainder of 6.
The next digit of our result is 8. 
Result so far: 4904523.1538
Subtracting 104 from 110 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 13:
When dividing 60 by 13, we get 4 with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 4904523.15384
Deduct 52 from 60 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 14:
13 goes into 80 6 times with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 4904523.153846
If we take 78 away from 80, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 15:
20 divided by 13 is 1 with a remainder of 7.
The next digit of our result is 1. 
Result so far: 4904523.1538461
If we take 13 away from 20, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 16:
13 goes into 70 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 4904523.15384615
Subtract 65 from 70 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

In conclusion, the division gives 4904523.15384615 with a balance of 5e-09.