We divide 81925627 by 643
The aim is to understand the frequency of 643 in 81925627.

Advancing to step 1:
8 divided by 643 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 643

Advancing to step 2:
When dividing 81 by 643, we get 0 with a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Include the next digit (9) from the dividend after 81, then repeat: 819 / 643

Step 3:
819 divided by 643 is 1 with a remainder of 176.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 643 from 819, we get 176.
Fetch the next digit (2) from the dividend, attach it to 176 and continue: 1762 / 643

Going ahead to step 4:
If we divide 1762 by 643, we get 2 and a remainder of 476.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 476 after subtracting 1286 from 1762.
Bring next digit (5) of the dividend behind the 476 and repeat the process: 4765 / 643

Let's proceed to step 5:
643 goes into 4765 7 times with a remainder of 264.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
Subtract 4501 from 4765 to get 264.
Grab the next digit (6) from the dividend, add it to 264, then carry on: 2646 / 643

Let's proceed to step 6:
The number 643 fits into 2646 4 times, leaving a remainder of 74.
Record the quotient 4 as the next digit in the result. 
Result so far: 1274.0
If we subtract 2572 from 2646, we get 74.
Fetch the next digit (2) from the dividend, attach it to 74 and continue: 742 / 643

Advancing to step 7:
643 can be fit into 742 1 times, resulting in a remainder of 99.
Write down 1 as next digit of the result. 
Result so far: 12741.0
If we take 643 away from 742, we end up with 99.
Include the next digit (7) from the dividend after 99, then repeat: 997 / 643

Let's proceed to step 8:
The number 643 fits into 997 1 times, leaving a remainder of 354.
The next digit of our result is 1. 
Result so far: 127411.0
Subtracting 643 from 997 leaves us with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Step 9:
643 can be fit into 3540 5 times, resulting in a remainder of 325.
Record the quotient 5 as the next digit in the result. 
Result so far: 127411.5
Deduct 3215 from 3540 and we're left with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Moving on to step 10:
3250 divided by 643 is 5 with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 127411.55
Subtract 3215 from 3250 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

In conclusion, the division gives 127411.55 with a balance of 0.035.