15709931 ÷ 651 
The aim is to understand the frequency of 651 in 15709931.

Advancing to step 1:
651 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 651

Step 2:
15 divided by 651 is 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Bring next digit (7) of the dividend behind the 15 and repeat the process: 157 / 651

Going ahead to step 3:
651 can be fit into 157 0 times, resulting in a remainder of 157.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 157 after subtracting 0 from 157.
Fetch the next digit (0) from the dividend, attach it to 157 and continue: 1570 / 651

Going ahead to step 4:
1570 divided by 651 is 2 with a remainder of 268.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 1302 away from 1570, we end up with 268.
Include the next digit (9) from the dividend after 268, then repeat: 2689 / 651

Step 5:
The number 651 fits into 2689 4 times, leaving a remainder of 85.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Subtracting 2604 from 2689 leaves us with 85.
Include the next digit (9) from the dividend after 85, then repeat: 859 / 651

Step 6:
When dividing 859 by 651, we get 1 with a remainder of 208.
The next digit of our result is 1. 
Result so far: 241.0
If we subtract 651 from 859, we get 208.
Grab the next digit (3) from the dividend, add it to 208, then carry on: 2083 / 651

Let's proceed to step 7:
When dividing 2083 by 651, we get 3 with a remainder of 130.
Write down 3 as next digit of the result. 
Result so far: 2413.0
Deduct 1953 from 2083 and we're left with 130.
Bring next digit (1) of the dividend behind the 130 and repeat the process: 1301 / 651

Let's proceed to step 8:
When dividing 1301 by 651, we get 1 with a remainder of 650.
The next digit of our result is 1. 
Result so far: 24131.0
If we subtract 651 from 1301, we get 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Step 9:
If we divide 6500 by 651, we get 9 and a remainder of 641.
The next digit of our result is 9. 
Result so far: 24131.9
Deduct 5859 from 6500 and we're left with 641.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6410, and continue the process.

Moving on to step 10:
651 goes into 6410 9 times with a remainder of 551.
The next digit of our result is 9. 
Result so far: 24131.99
The remainder is 551 after subtracting 5859 from 6410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

The final outcome is 24131.99, with a leftover of 0.551.