521626 ÷ 68 
The aim is to understand the frequency of 68 in 521626.

Let's proceed to step 1:
When dividing 5 by 68, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 68

Moving on to step 2:
The number 68 fits into 52 0 times, leaving a remainder of 52.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Grab the next digit (1) from the dividend, add it to 52, then carry on: 521 / 68

Advancing to step 3:
68 can be fit into 521 7 times, resulting in a remainder of 45.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 45 after subtracting 476 from 521.
Append the next digit (6) from the dividend to 45 and continue with: 456 / 68

Let's proceed to step 4:
68 goes into 456 6 times with a remainder of 48.
Write down 6 as next digit of the result. 
Result so far: 76.0
If we take 408 away from 456, we end up with 48.
Include the next digit (2) from the dividend after 48, then repeat: 482 / 68

Moving on to step 5:
When dividing 482 by 68, we get 7 with a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 767.0
Deduct 476 from 482 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 68

Advancing to step 6:
If we divide 66 by 68, we get 0 and a remainder of 66.
The next digit of our result is 0. 
Result so far: 7670.0
If we subtract 0 from 66, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 7:
68 goes into 660 9 times with a remainder of 48.
Use 9 as the next digit of our solution. 
Result so far: 7670.9
If we subtract 612 from 660, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 8:
68 can be fit into 480 7 times, resulting in a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 7670.97
If we subtract 476 from 480, we 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.

Moving on to step 9:
40 divided by 68 is 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 7670.97
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.

Moving on to step 10:
The number 68 fits into 400 5 times, leaving a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 7670.9705
If we take 340 away from 400, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 11:
When dividing 600 by 68, we get 8 with a remainder of 56.
Put 8 as the next digit of the answer. 
Result so far: 7670.97058
If we take 544 away from 600, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 12:
If we divide 560 by 68, we get 8 and a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 7670.970588
Subtracting 544 from 560 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

In conclusion, the division gives 7670.970588 with a balance of 1.6e-06.