We're dividing 68709335 by 210 
The aim is to understand the frequency of 210 in 68709335.

Let's proceed to step 1:
When dividing 6 by 210, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 210

On to step 2:
68 divided by 210 is 0 with a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 68 leaves us with 68.
Fetch the next digit (7) from the dividend, attach it to 68 and continue: 687 / 210

Going ahead to step 3:
687 divided by 210 is 3 with a remainder of 57.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 57 after subtracting 630 from 687.
Append the next digit (0) from the dividend to 57 and continue with: 570 / 210

On to step 4:
The number 210 fits into 570 2 times, leaving a remainder of 150.
Put 2 as the next digit of the answer. 
Result so far: 32.0
Subtracting 420 from 570 leaves us with 150.
Grab the next digit (9) from the dividend, add it to 150, then carry on: 1509 / 210

On to step 5:
210 goes into 1509 7 times with a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 327.0
The remainder is 39 after subtracting 1470 from 1509.
Include the next digit (3) from the dividend after 39, then repeat: 393 / 210

On to step 6:
When dividing 393 by 210, we get 1 with a remainder of 183.
Use 1 as the next digit of our solution. 
Result so far: 3271.0
The remainder is 183 after subtracting 210 from 393.
Bring next digit (3) of the dividend behind the 183 and repeat the process: 1833 / 210

Step 7:
1833 divided by 210 is 8 with a remainder of 153.
Put 8 as the next digit of the answer. 
Result so far: 32718.0
Subtract 1680 from 1833 to get 153.
Append the next digit (5) from the dividend to 153 and continue with: 1535 / 210

Going ahead to step 8:
210 can be fit into 1535 7 times, resulting in a remainder of 65.
Put 7 as the next digit of the answer. 
Result so far: 327187.0
Deduct 1470 from 1535 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 9:
650 divided by 210 is 3 with a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 327187.3
Subtracting 630 from 650 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
The number 210 fits into 200 0 times, leaving a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 327187.3
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 11:
If we divide 2000 by 210, we get 9 and a remainder of 110.
Use 9 as the next digit of our solution. 
Result so far: 327187.309
If we subtract 1890 from 2000, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 12:
210 can be fit into 1100 5 times, resulting in a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 327187.3095
Deduct 1050 from 1100 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 13:
500 divided by 210 is 2 with a remainder of 80.
The next digit of our result is 2. 
Result so far: 327187.30952
Subtract 420 from 500 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 14:
800 divided by 210 is 3 with a remainder of 170.
Put 3 as the next digit of the answer. 
Result so far: 327187.309523
Subtracting 630 from 800 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 15:
1700 divided by 210 is 8 with a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 327187.3095238
The remainder is 20 after subtracting 1680 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 16:
210 can be fit into 200 0 times, resulting in a remainder of 200.
The next digit of our result is 0. 
Result so far: 327187.3095238
Deduct 0 from 200 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

In conclusion, the division gives 327187.3095238 with a balance of 2e-07.