19715558 ÷ 637 
The aim is to understand the frequency of 637 in 19715558.

Step 1:
When dividing 1 by 637, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 637

Step 2:
The number 637 fits into 19 0 times, leaving a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Append the next digit (7) from the dividend to 19 and continue with: 197 / 637

Moving on to step 3:
If we divide 197 by 637, we get 0 and a remainder of 197.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 197, we end up with 197.
Fetch the next digit (1) from the dividend, attach it to 197 and continue: 1971 / 637

Let's proceed to step 4:
If we divide 1971 by 637, we get 3 and a remainder of 60.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 1911 from 1971 leaves us with 60.
Grab the next digit (5) from the dividend, add it to 60, then carry on: 605 / 637

Moving on to step 5:
637 goes into 605 0 times with a remainder of 605.
Record the quotient 0 as the next digit in the result. 
Result so far: 30.0
Subtracting 0 from 605 leaves us with 605.
Take the next digit (5) from the dividend and append it to 605, then repeat: 6055 / 637

Moving on to step 6:
637 goes into 6055 9 times with a remainder of 322.
Write down 9 as next digit of the result. 
Result so far: 309.0
Deduct 5733 from 6055 and we're left with 322.
Take the next digit (5) from the dividend and append it to 322, then repeat: 3225 / 637

Moving on to step 7:
637 goes into 3225 5 times with a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 3095.0
The remainder is 40 after subtracting 3185 from 3225.
Take the next digit (8) from the dividend and append it to 40, then repeat: 408 / 637

On to step 8:
If we divide 408 by 637, we get 0 and a remainder of 408.
Use 0 as the next digit of our solution. 
Result so far: 30950.0
If we subtract 0 from 408, we get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

On to step 9:
637 can be fit into 4080 6 times, resulting in a remainder of 258.
Use 6 as the next digit of our solution. 
Result so far: 30950.6
If we take 3822 away from 4080, we end up with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Going ahead to step 10:
2580 divided by 637 is 4 with a remainder of 32.
Record the quotient 4 as the next digit in the result. 
Result so far: 30950.64
Subtracting 2548 from 2580 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 11:
637 can be fit into 320 0 times, resulting in a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 30950.64
If we subtract 0 from 320, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 12:
637 goes into 3200 5 times with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 30950.6405
If we take 3185 away from 3200, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 13:
If we divide 150 by 637, we get 0 and a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 30950.6405
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 14:
If we divide 1500 by 637, we get 2 and a remainder of 226.
Write down 2 as next digit of the result. 
Result so far: 30950.640502
Deduct 1274 from 1500 and we're left with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

On to step 15:
637 goes into 2260 3 times with a remainder of 349.
Record the quotient 3 as the next digit in the result. 
Result so far: 30950.6405023
The remainder is 349 after subtracting 1911 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Let's proceed to step 16:
When dividing 3490 by 637, we get 5 with a remainder of 305.
The number 5 becomes the next digit in our result. 
Result so far: 30950.64050235
If we subtract 3185 from 3490, we get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

The final outcome is 30950.64050235, with a leftover of 3.05e-07.