78518251 ÷ 68 
The aim is to understand the frequency of 68 in 78518251.

Advancing to step 1:
68 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 68

Step 2:
68 can be fit into 78 1 times, resulting in a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 68 from 78 and we're left with 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 68

Moving on to step 3:
The number 68 fits into 105 1 times, leaving a remainder of 37.
The next digit of our result is 1. 
Result so far: 11.0
The remainder is 37 after subtracting 68 from 105.
Fetch the next digit (1) from the dividend, attach it to 37 and continue: 371 / 68

On to step 4:
68 can be fit into 371 5 times, resulting in a remainder of 31.
Record the quotient 5 as the next digit in the result. 
Result so far: 115.0
Subtract 340 from 371 to get 31.
Bring next digit (8) of the dividend behind the 31 and repeat the process: 318 / 68

Let's proceed to step 5:
68 can be fit into 318 4 times, resulting in a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 1154.0
Deduct 272 from 318 and we're left with 46.
Bring next digit (2) of the dividend behind the 46 and repeat the process: 462 / 68

Advancing to step 6:
If we divide 462 by 68, we get 6 and a remainder of 54.
The next digit of our result is 6. 
Result so far: 11546.0
Deduct 408 from 462 and we're left with 54.
Bring next digit (5) of the dividend behind the 54 and repeat the process: 545 / 68

On to step 7:
68 can be fit into 545 8 times, resulting in a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 115468.0
The remainder is 1 after subtracting 544 from 545.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 68

Moving on to step 8:
When dividing 11 by 68, we get 0 with a remainder of 11.
The next digit of our result is 0. 
Result so far: 1154680.0
Deduct 0 from 11 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 9:
If we divide 110 by 68, we get 1 and a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 1154680.1
Deduct 68 from 110 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
When dividing 420 by 68, we get 6 with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 1154680.16
Subtract 408 from 420 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 11:
If we divide 120 by 68, we get 1 and a remainder of 52.
Record the quotient 1 as the next digit in the result. 
Result so far: 1154680.161
The remainder is 52 after subtracting 68 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 12:
520 divided by 68 is 7 with a remainder of 44.
The number 7 becomes the next digit in our result. 
Result so far: 1154680.1617
If we take 476 away from 520, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 13:
440 divided by 68 is 6 with a remainder of 32.
The number 6 becomes the next digit in our result. 
Result so far: 1154680.16176
If we take 408 away from 440, we end up 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.

Advancing to step 14:
68 goes into 320 4 times with a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 1154680.161764
The remainder is 48 after subtracting 272 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 15:
480 divided by 68 is 7 with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 1154680.1617647
Subtract 476 from 480 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 16:
68 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 1154680.1617647
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

In conclusion, the division gives 1154680.1617647 with a balance of 4e-08.