We look at the division of 78051635 by 688 
The aim is to understand the frequency of 688 in 78051635.

Going ahead to step 1:
7 divided by 688 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 688

Going ahead to step 2:
688 can be fit into 78 0 times, resulting in a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Grab the next digit (0) from the dividend, add it to 78, then carry on: 780 / 688

Advancing to step 3:
688 can be fit into 780 1 times, resulting in a remainder of 92.
The next digit of our result is 1. 
Result so far: 1.0
If we take 688 away from 780, we end up with 92.
Take the next digit (5) from the dividend and append it to 92, then repeat: 925 / 688

Going ahead to step 4:
688 goes into 925 1 times with a remainder of 237.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Deduct 688 from 925 and we're left with 237.
Fetch the next digit (1) from the dividend, attach it to 237 and continue: 2371 / 688

Step 5:
When dividing 2371 by 688, we get 3 with a remainder of 307.
Write down 3 as next digit of the result. 
Result so far: 113.0
If we take 2064 away from 2371, we end up with 307.
Grab the next digit (6) from the dividend, add it to 307, then carry on: 3076 / 688

Moving on to step 6:
3076 divided by 688 is 4 with a remainder of 324.
Write down 4 as next digit of the result. 
Result so far: 1134.0
If we subtract 2752 from 3076, we get 324.
Append the next digit (3) from the dividend to 324 and continue with: 3243 / 688

On to step 7:
When dividing 3243 by 688, we get 4 with a remainder of 491.
Use 4 as the next digit of our solution. 
Result so far: 11344.0
Deduct 2752 from 3243 and we're left with 491.
Take the next digit (5) from the dividend and append it to 491, then repeat: 4915 / 688

Advancing to step 8:
The number 688 fits into 4915 7 times, leaving a remainder of 99.
The number 7 becomes the next digit in our result. 
Result so far: 113447.0
Subtract 4816 from 4915 to get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Step 9:
990 divided by 688 is 1 with a remainder of 302.
Use 1 as the next digit of our solution. 
Result so far: 113447.1
If we subtract 688 from 990, we get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Moving on to step 10:
688 can be fit into 3020 4 times, resulting in a remainder of 268.
Put 4 as the next digit of the answer. 
Result so far: 113447.14
Subtract 2752 from 3020 to get 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Going ahead to step 11:
If we divide 2680 by 688, we get 3 and a remainder of 616.
Use 3 as the next digit of our solution. 
Result so far: 113447.143
Subtracting 2064 from 2680 leaves us with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Going ahead to step 12:
If we divide 6160 by 688, we get 8 and a remainder of 656.
The next digit of our result is 8. 
Result so far: 113447.1438
The remainder is 656 after subtracting 5504 from 6160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

On to step 13:
The number 688 fits into 6560 9 times, leaving a remainder of 368.
Put 9 as the next digit of the answer. 
Result so far: 113447.14389
Subtracting 6192 from 6560 leaves us with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Step 14:
688 can be fit into 3680 5 times, resulting in a remainder of 240.
Record the quotient 5 as the next digit in the result. 
Result so far: 113447.143895
If we subtract 3440 from 3680, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 15:
If we divide 2400 by 688, we get 3 and a remainder of 336.
Use 3 as the next digit of our solution. 
Result so far: 113447.1438953
Subtract 2064 from 2400 to get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

On to step 16:
If we divide 3360 by 688, we get 4 and a remainder of 608.
Use 4 as the next digit of our solution. 
Result so far: 113447.14389534
If we take 2752 away from 3360, we end up 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.

After the division, we end up with 113447.14389534 and a remainder of 6.08e-07.