68821871 ÷ 507 
The aim is to understand the frequency of 507 in 68821871.

Step 1:
If we divide 6 by 507, we get 0 and 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.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 507

Advancing to step 2:
If we divide 68 by 507, we get 0 and a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Grab the next digit (8) from the dividend, add it to 68, then carry on: 688 / 507

On to step 3:
The number 507 fits into 688 1 times, leaving a remainder of 181.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 507 from 688 leaves us with 181.
Bring next digit (2) of the dividend behind the 181 and repeat the process: 1812 / 507

Moving on to step 4:
The number 507 fits into 1812 3 times, leaving a remainder of 291.
Put 3 as the next digit of the answer. 
Result so far: 13.0
If we take 1521 away from 1812, we end up with 291.
Append the next digit (1) from the dividend to 291 and continue with: 2911 / 507

Step 5:
2911 divided by 507 is 5 with a remainder of 376.
Write down 5 as next digit of the result. 
Result so far: 135.0
Subtract 2535 from 2911 to get 376.
Append the next digit (8) from the dividend to 376 and continue with: 3768 / 507

Let's proceed to step 6:
The number 507 fits into 3768 7 times, leaving a remainder of 219.
Write down 7 as next digit of the result. 
Result so far: 1357.0
If we subtract 3549 from 3768, we get 219.
Include the next digit (7) from the dividend after 219, then repeat: 2197 / 507

Advancing to step 7:
When dividing 2197 by 507, we get 4 with a remainder of 169.
Put 4 as the next digit of the answer. 
Result so far: 13574.0
Deduct 2028 from 2197 and we're left with 169.
Include the next digit (1) from the dividend after 169, then repeat: 1691 / 507

Moving on to step 8:
The number 507 fits into 1691 3 times, leaving a remainder of 170.
Write down 3 as next digit of the result. 
Result so far: 135743.0
The remainder is 170 after subtracting 1521 from 1691.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Step 9:
1700 divided by 507 is 3 with a remainder of 179.
The number 3 becomes the next digit in our result. 
Result so far: 135743.3
The remainder is 179 after subtracting 1521 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

On to step 10:
If we divide 1790 by 507, we get 3 and a remainder of 269.
Record the quotient 3 as the next digit in the result. 
Result so far: 135743.33
Subtract 1521 from 1790 to get 269.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

In conclusion, the division gives 135743.33 with a balance of 0.269.