We look at the division of 15544401 by 751 
The aim is to understand the frequency of 751 in 15544401.

Step 1:
When dividing 1 by 751, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 751

Let's proceed to step 2:
If we divide 15 by 751, we get 0 and a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Take the next digit (5) from the dividend and append it to 15, then repeat: 155 / 751

Let's proceed to step 3:
If we divide 155 by 751, we get 0 and a remainder of 155.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 155 to get 155.
Include the next digit (4) from the dividend after 155, then repeat: 1554 / 751

Advancing to step 4:
If we divide 1554 by 751, we get 2 and a remainder of 52.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 52 after subtracting 1502 from 1554.
Grab the next digit (4) from the dividend, add it to 52, then carry on: 524 / 751

Step 5:
If we divide 524 by 751, we get 0 and a remainder of 524.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
If we take 0 away from 524, we end up with 524.
Include the next digit (4) from the dividend after 524, then repeat: 5244 / 751

Step 6:
751 can be fit into 5244 6 times, resulting in a remainder of 738.
Use 6 as the next digit of our solution. 
Result so far: 206.0
The remainder is 738 after subtracting 4506 from 5244.
Append the next digit (0) from the dividend to 738 and continue with: 7380 / 751

Moving on to step 7:
The number 751 fits into 7380 9 times, leaving a remainder of 621.
The number 9 becomes the next digit in our result. 
Result so far: 2069.0
If we subtract 6759 from 7380, we get 621.
Append the next digit (1) from the dividend to 621 and continue with: 6211 / 751

On to step 8:
If we divide 6211 by 751, we get 8 and a remainder of 203.
Write down 8 as next digit of the result. 
Result so far: 20698.0
Subtract 6008 from 6211 to get 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

On to step 9:
2030 divided by 751 is 2 with a remainder of 528.
Use 2 as the next digit of our solution. 
Result so far: 20698.2
Subtracting 1502 from 2030 leaves us with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

On to step 10:
When dividing 5280 by 751, we get 7 with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 20698.27
If we subtract 5257 from 5280, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 11:
The number 751 fits into 230 0 times, leaving a remainder of 230.
The number 0 becomes the next digit in our result. 
Result so far: 20698.27
Subtracting 0 from 230 leaves us with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Moving on to step 12:
751 can be fit into 2300 3 times, resulting in a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 20698.2703
Deduct 2253 from 2300 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 13:
751 can be fit into 470 0 times, resulting in a remainder of 470.
Record the quotient 0 as the next digit in the result. 
Result so far: 20698.2703
Deduct 0 from 470 and we're left with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Advancing to step 14:
4700 divided by 751 is 6 with a remainder of 194.
Put 6 as the next digit of the answer. 
Result so far: 20698.270306
If we take 4506 away from 4700, we end up with 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Let's proceed to step 15:
The number 751 fits into 1940 2 times, leaving a remainder of 438.
The next digit of our result is 2. 
Result so far: 20698.2703062
Subtract 1502 from 1940 to get 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

Let's proceed to step 16:
If we divide 4380 by 751, we get 5 and a remainder of 625.
Use 5 as the next digit of our solution. 
Result so far: 20698.27030625
If we subtract 3755 from 4380, we get 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

The final result is 20698.27030625 with a remainder of 6.25e-07.