We look at the division of 12063651 by 688 
The aim is to understand the frequency of 688 in 12063651.

Step 1:
If we divide 1 by 688, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 688

On to step 2:
When dividing 12 by 688, we get 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 688

Step 3:
120 divided by 688 is 0 with a remainder of 120.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 120, we end up with 120.
Take the next digit (6) from the dividend and append it to 120, then repeat: 1206 / 688

Let's proceed to step 4:
The number 688 fits into 1206 1 times, leaving a remainder of 518.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 688 from 1206 and we're left with 518.
Grab the next digit (3) from the dividend, add it to 518, then carry on: 5183 / 688

Step 5:
688 goes into 5183 7 times with a remainder of 367.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtract 4816 from 5183 to get 367.
Fetch the next digit (6) from the dividend, attach it to 367 and continue: 3676 / 688

Moving on to step 6:
When dividing 3676 by 688, we get 5 with a remainder of 236.
Put 5 as the next digit of the answer. 
Result so far: 175.0
If we take 3440 away from 3676, we end up with 236.
Grab the next digit (5) from the dividend, add it to 236, then carry on: 2365 / 688

Moving on to step 7:
If we divide 2365 by 688, we get 3 and a remainder of 301.
Write down 3 as next digit of the result. 
Result so far: 1753.0
The remainder is 301 after subtracting 2064 from 2365.
Bring next digit (1) of the dividend behind the 301 and repeat the process: 3011 / 688

Step 8:
When dividing 3011 by 688, we get 4 with a remainder of 259.
Use 4 as the next digit of our solution. 
Result so far: 17534.0
Subtract 2752 from 3011 to get 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Going ahead to step 9:
When dividing 2590 by 688, we get 3 with a remainder of 526.
Record the quotient 3 as the next digit in the result. 
Result so far: 17534.3
If we take 2064 away from 2590, we end up with 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

On to step 10:
688 can be fit into 5260 7 times, resulting in a remainder of 444.
The next digit of our result is 7. 
Result so far: 17534.37
If we subtract 4816 from 5260, we get 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Advancing to step 11:
688 goes into 4440 6 times with a remainder of 312.
The number 6 becomes the next digit in our result. 
Result so far: 17534.376
If we subtract 4128 from 4440, we get 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Moving on to step 12:
The number 688 fits into 3120 4 times, leaving a remainder of 368.
The next digit of our result is 4. 
Result so far: 17534.3764
The remainder is 368 after subtracting 2752 from 3120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Advancing to step 13:
688 can be fit into 3680 5 times, resulting in a remainder of 240.
Put 5 as the next digit of the answer. 
Result so far: 17534.37645
Deduct 3440 from 3680 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 14:
When dividing 2400 by 688, we get 3 with a remainder of 336.
Use 3 as the next digit of our solution. 
Result so far: 17534.376453
Deduct 2064 from 2400 and we're left with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Moving on to step 15:
688 goes into 3360 4 times with a remainder of 608.
The next digit of our result is 4. 
Result so far: 17534.3764534
Deduct 2752 from 3360 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Let's proceed to step 16:
The number 688 fits into 6080 8 times, leaving a remainder of 576.
Record the quotient 8 as the next digit in the result. 
Result so far: 17534.37645348
Subtract 5504 from 6080 to get 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

The final outcome is 17534.37645348, with a leftover of 5.76e-07.