69135711 divided by 643 
The aim is to understand the frequency of 643 in 69135711.

Moving on to step 1:
If we divide 6 by 643, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 643

Advancing to step 2:
The number 643 fits into 69 0 times, leaving a remainder of 69.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 69 after subtracting 0 from 69.
Take the next digit (1) from the dividend and append it to 69, then repeat: 691 / 643

Advancing to step 3:
If we divide 691 by 643, we get 1 and a remainder of 48.
The next digit of our result is 1. 
Result so far: 1.0
If we take 643 away from 691, we end up with 48.
Fetch the next digit (3) from the dividend, attach it to 48 and continue: 483 / 643

Going ahead to step 4:
483 divided by 643 is 0 with a remainder of 483.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 483 and we're left with 483.
Take the next digit (5) from the dividend and append it to 483, then repeat: 4835 / 643

Step 5:
4835 divided by 643 is 7 with a remainder of 334.
The next digit of our result is 7. 
Result so far: 107.0
Deduct 4501 from 4835 and we're left with 334.
Fetch the next digit (7) from the dividend, attach it to 334 and continue: 3347 / 643

Let's proceed to step 6:
643 can be fit into 3347 5 times, resulting in a remainder of 132.
The number 5 becomes the next digit in our result. 
Result so far: 1075.0
If we take 3215 away from 3347, we end up with 132.
Include the next digit (1) from the dividend after 132, then repeat: 1321 / 643

On to step 7:
The number 643 fits into 1321 2 times, leaving a remainder of 35.
Record the quotient 2 as the next digit in the result. 
Result so far: 10752.0
Deduct 1286 from 1321 and we're left with 35.
Fetch the next digit (1) from the dividend, attach it to 35 and continue: 351 / 643

On to step 8:
643 goes into 351 0 times with a remainder of 351.
Record the quotient 0 as the next digit in the result. 
Result so far: 107520.0
Subtract 0 from 351 to get 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Moving on to step 9:
If we divide 3510 by 643, we get 5 and a remainder of 295.
The number 5 becomes the next digit in our result. 
Result so far: 107520.5
Subtracting 3215 from 3510 leaves us with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Let's proceed to step 10:
643 goes into 2950 4 times with a remainder of 378.
Use 4 as the next digit of our solution. 
Result so far: 107520.54
Subtract 2572 from 2950 to get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Going ahead to step 11:
643 goes into 3780 5 times with a remainder of 565.
Use 5 as the next digit of our solution. 
Result so far: 107520.545
If we take 3215 away from 3780, we end up with 565.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

Let's proceed to step 12:
643 can be fit into 5650 8 times, resulting in a remainder of 506.
Record the quotient 8 as the next digit in the result. 
Result so far: 107520.5458
If we subtract 5144 from 5650, we get 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Step 13:
The number 643 fits into 5060 7 times, leaving a remainder of 559.
Write down 7 as next digit of the result. 
Result so far: 107520.54587
Subtracting 4501 from 5060 leaves us with 559.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5590, and continue the process.

Moving on to step 14:
If we divide 5590 by 643, we get 8 and a remainder of 446.
The number 8 becomes the next digit in our result. 
Result so far: 107520.545878
Subtract 5144 from 5590 to get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Step 15:
When dividing 4460 by 643, we get 6 with a remainder of 602.
The next digit of our result is 6. 
Result so far: 107520.5458786
If we subtract 3858 from 4460, we get 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

Going ahead to step 16:
643 goes into 6020 9 times with a remainder of 233.
The number 9 becomes the next digit in our result. 
Result so far: 107520.54587869
Subtract 5787 from 6020 to get 233.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

The final outcome is 107520.54587869, with a leftover of 2.33e-07.