81425210 ÷ 707 
The aim is to understand the frequency of 707 in 81425210.

Step 1:
When dividing 8 by 707, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 707

Step 2:
707 can be fit into 81 0 times, resulting in a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Grab the next digit (4) from the dividend, add it to 81, then carry on: 814 / 707

Let's proceed to step 3:
The number 707 fits into 814 1 times, leaving a remainder of 107.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 707 from 814 to get 107.
Bring next digit (2) of the dividend behind the 107 and repeat the process: 1072 / 707

Moving on to step 4:
707 can be fit into 1072 1 times, resulting in a remainder of 365.
The next digit of our result is 1. 
Result so far: 11.0
Subtracting 707 from 1072 leaves us with 365.
Fetch the next digit (5) from the dividend, attach it to 365 and continue: 3655 / 707

Step 5:
If we divide 3655 by 707, we get 5 and a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 115.0
If we subtract 3535 from 3655, we get 120.
Grab the next digit (2) from the dividend, add it to 120, then carry on: 1202 / 707

Advancing to step 6:
When dividing 1202 by 707, we get 1 with a remainder of 495.
The next digit of our result is 1. 
Result so far: 1151.0
Deduct 707 from 1202 and we're left with 495.
Bring next digit (1) of the dividend behind the 495 and repeat the process: 4951 / 707

On to step 7:
707 can be fit into 4951 7 times, resulting in a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 11517.0
Subtracting 4949 from 4951 leaves us with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 707

Step 8:
The number 707 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 115170.0
If we subtract 0 from 20, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
If we divide 200 by 707, we get 0 and a remainder of 200.
The next digit of our result is 0. 
Result so far: 115170.0
Subtracting 0 from 200 leaves us 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.

Moving on to step 10:
When dividing 2000 by 707, we get 2 with a remainder of 586.
The number 2 becomes the next digit in our result. 
Result so far: 115170.02
If we take 1414 away from 2000, we end up with 586.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5860, and continue the process.

Let's proceed to step 11:
When dividing 5860 by 707, we get 8 with a remainder of 204.
The number 8 becomes the next digit in our result. 
Result so far: 115170.028
Subtracting 5656 from 5860 leaves us with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Step 12:
2040 divided by 707 is 2 with a remainder of 626.
The number 2 becomes the next digit in our result. 
Result so far: 115170.0282
If we take 1414 away from 2040, we end up with 626.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

On to step 13:
707 can be fit into 6260 8 times, resulting in a remainder of 604.
The next digit of our result is 8. 
Result so far: 115170.02828
Deduct 5656 from 6260 and we're left with 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Going ahead to step 14:
If we divide 6040 by 707, we get 8 and a remainder of 384.
Put 8 as the next digit of the answer. 
Result so far: 115170.028288
If we subtract 5656 from 6040, we get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

The final result is 115170.028288 with a remainder of 3.84e-05.