Let's divide 639402 by 68
The aim is to understand the frequency of 68 in 639402.

Advancing to step 1:
If we divide 6 by 68, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 68

Step 2:
63 divided by 68 is 0 with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Include the next digit (9) from the dividend after 63, then repeat: 639 / 68

Moving on to step 3:
68 goes into 639 9 times with a remainder of 27.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 612 from 639 and we're left with 27.
Grab the next digit (4) from the dividend, add it to 27, then carry on: 274 / 68

Advancing to step 4:
The number 68 fits into 274 4 times, leaving a remainder of 2.
The next digit of our result is 4. 
Result so far: 94.0
Subtracting 272 from 274 leaves us with 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 68

Going ahead to step 5:
If we divide 20 by 68, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 940.0
If we subtract 0 from 20, we get 20.
Fetch the next digit (2) from the dividend, attach it to 20 and continue: 202 / 68

Advancing to step 6:
If we divide 202 by 68, we get 2 and a remainder of 66.
Record the quotient 2 as the next digit in the result. 
Result so far: 9402.0
Subtracting 136 from 202 leaves us with 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 can be fit into 660 9 times, resulting in a remainder of 48.
The next digit of our result is 9. 
Result so far: 9402.9
If we take 612 away from 660, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 8:
480 divided by 68 is 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 9402.97
The remainder is 4 after subtracting 476 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
40 divided by 68 is 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 9402.97
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
68 can be fit into 400 5 times, resulting in a remainder of 60.
Write down 5 as next digit of the result. 
Result so far: 9402.9705
If we subtract 340 from 400, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 11:
When dividing 600 by 68, we get 8 with a remainder of 56.
Write down 8 as next digit of the result. 
Result so far: 9402.97058
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.

Let's proceed to step 12:
560 divided by 68 is 8 with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 9402.970588
If we subtract 544 from 560, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 9402.970588, with a leftover of 1.6e-06.